AN/PRR-9 Helmet Receiver: Squad Comms for Nam Our Own Devices 2026-01-14 | First fielded in Vietnam in 1967, the AN/PRR-9 receiver and AN/PRT-4 transmitter (collectively known as the PRC-88 system) were intended to provide portable, short-range platoon and squad-level communications. While the system showed great promise in testing, it performed poorly under actual combat conditions and was quickly withdrawn from service. Special thanks to viewer Jim Henson for sending me this unit, and to Julian Horn for helping me decipher the internal circuitry. 0:00 Intro1:12 Other Squad Radios1:50 PRC-88 Origins3:14 AN/PRR-9 External Features5:52 Heterodyne Receivers7:27 Internal Circuitry12:25 Operational History13:58 OutroCrystal Radios video: youtu.be/6HqgWcTnWTkRT-159A/URC-4 Survival Radio video: youtu.be/6mq2jYFRl8ASOURCESvietnamgear.com/kit.aspx?kit=600vietnamgear.com/kit.aspx?kit=47vietnamgear.com/kit.aspx?kit=517http://www.radiomanual.info/schemi/Surplus_NATO/AN-PRT-4A_AN-PRR-9_serv_TM11-5820-549-35_1969.pdfhttp://www.radiomanual.info/schemi/Surplus_NATO/AN-PRT-4A_AN-PRR-9_serv_user_TM11-5820-549-12_1966.pdfn6cc.com/prt-4-prr-9-squad-radios
SHORT: Coutinho Course Corrector Our Own Devices 2026-04-03 | Invented in 1921 by Portuguese aviation pioneers Gago Coutinho and Sacadura Cabral, the first pilots to fly across the South Atlantic, this instrument was designed to determine the direction and velocity of the wind from drift observations and calculate the appropriate correction angle and ground speed. It was part of a larger system of aerial navigation system and techniques developed by Coutinho and Cabral, which included the Bubble Sextant. Sextant video: youtu.be/RnXauBYXPSEDrift Sights video: youtu.be/weT_cEWoCBQAstrocompass video: youtu.be/xBScbuBYv0wE6B Computer video: youtu.be/__0F6JAXj8U Jeppesen CR-3 Computer video: youtu.be/FDje5ASk_NcVsh-1 Vetrochet Course Corrector video: youtu.be/4I5hT6Y3f3gSOURCESscirp.org/journal/paperinformation?paperid=70889https://www.flight-computer.de/Air-Navigation-Computers.pdfartsandculture.google.com/asset/course-correction-device-carlos-viegas-gago-coutinho/oAHN5IkDYHeM0wscirp.org/journal/paperinformation?paperid=70870scirp.org/journal/paperinformation?paperid=62900https://www.nationalgeographic.pt/historia/sacadura-cabral-e-gago-coutinho-os-gloriosos-aviadores-1922_2921https://revistas.rcaap.pt/boletimspm/article/view/25664https://www.biddingleiloes.pt/pt/auction/lot/id/33073
Reflex Gunsights Part I: Principles & Origins Our Own Devices 2026-03-26 | Originally invented in 1900 for use on small arms, reflector or reflex sights use the principle of light collimation to produce an illuminated reticle that does not move relative to the shooter's sightline, making aiming easier. They were extensively used aboard military aircraft from the 1930s until the 1960s when they were supplanted by Heads Up Displays (HUDs).GD-16 Gun Camera video:G.S.A.P. Gun Camera video:TIFO WWI Optics-for-Rubber Trade video:0:00 Introduction0:51 The Parallax Problem2:50 The Grubb Sight4:18 Early Aircraft Reflex Sights5:28 Free Gun Sight Mk.III9:30 Mk.III Variants10:14 Fixed Gun Sight Mk.II13:54 Projector Gunsights14:55 Mk.II Variants15:30 Other WWII Reflex Sights16:19 OutroSOURCESaviatorsdatabase.com/wp-content/uploads/2013/07/Gyro-gunsights.pdfscribd.com/document/200868938/Reflector-Gun-Sights-2-Nov-25th-1943modelersalliance.org/threads/reflector-gunsight.156902rochesteravionicarchives.co.uk/items/reflector-gunsight-2scribd.com/document/182059262/Reflector-Gun-Sights-1-Nov-25th-1943-pdf#google_vignetteaviatorsdatabase.com/wp-content/uploads/2013/07/Reflective-sights.pdfhi-luxoptics.com/blogs/history/early-reflex-sights?srsltid=AfmBOor8Ag_EiHwE0QJTbIifBF5GkSIGwc3DcHW_HNbzS87-ZfrZ1XAH
SHORT: Nuclear Yield and Position of Burst Gauge Our Own Devices 2026-03-20 | Developed by the Defence Research Chemical Laboratory in the late 1950s / early 1960s, the "Educated Stovepipe" was a Canadian instrument designed to measure the location, altitude, and yield of a nuclear detonation. It was intended to be deployed as part of the Nuclear Detonation and Fallout Reporting System (NDFRS), a network of fallout and blast monitoring posts built across Canada between 1959 and 1963 but cancelled before it became operational.Type B FRP video: youtu.be/9K_kQ60gAl8NDFRS Lecture: youtu.be/EEEZglNlL1AMiami Bunker video 1: youtu.be/Gc-HQLZ2-cEMiami Bunker video 2: youtu.be/ylnwQr2d-pUMarway Militaria: marway-militaria.comMiami Bunker website: miamirailwaystationmuseum.com/fallout-reporting-shelter
Simplex TCF Time Recorder: Punching Up Your Workday Our Own Devices 2026-03-17 | Thank you to Hungry Minds for sponsoring this video. To get 10% off your copy of The Book: the Ultimate Guide to Rebuilding Civilization, please follow the link bit.ly/4bxROBW and enter the promo code OUROWNDEVICES10NOTES:1. I forgot to mention that the "minutes" disk actually displays hundredths of an hour in order to make calculations easier for the payroll clerk.2. A viewer pointed out that the large brass disk in the mechanism allows the clock to ring an electric bell to signal start/end of shift, lunch etc. Metal pins were placed in the appropriate hole(s) on the disk in order to strike and close an electric switch. First introduced in the 1850s, Time Recorders - also known as Time Clocks, Punch Clocks, Clock Card Machines, or "Bundys" - were designed to help employers keep track of their employees hours when working flexible shifts. While dozens of different designs were developed and used over the years, the most common type used individual paper cards given to each employee and stamped with a clock-in and clock-in time at the start and end of each shift. These were later collected by the payroll clerk to calculate hours worked during each pay period. Business Forms Ruler video: youtu.be/9VXCg0lFFo4TIFO IBM video: youtube.com/watch?v=5U2lDiE0vwI&pp=ygUkdG9kYXkgaSBmb3VuZCBvdXQgSUJNIGV0aGljYWwgaGFja2VyLightning Adding Machine video: youtu.be/lsP0mt3HuA0Swift Handy Calculator video: youtu.be/7YtusYdBxJIMeiwa Alexe Calculator video: youtu.be/tPGqaX_8xjkMagic Brain Calculator video: youtu.be/6l3zCWL1y3QWolverine Toy Adding Machine video: youtu.be/Lanj0f2-Myg0:00 Intro1:41 Hungry Minds Sponsorship3:37 Time Recorder Evolution7:06 Watch Clocks7:45 Market Consolidation8:33 Simplex History9:18 Simplex TCF Overview10:51 Telechron Motors12:39 Stamping Wheel System13:40 Stamping System14:17 OutroSOURCESworkclocks.co.uk/typesweb.archive.org/web/20041228010554/http://www-03.ibm.com/ibm/history/exhibits/cc/cc_room.htmlantiquetimeclocks.com/manufacturers/simplex.htmlhttps://www.bobshop.co.za/a-superb-rare-vintage-c1950s-usa-made-electric-simplex-time-recorder-model-tcf10r4-clock-working/p/237333036?srsltid=AfmBOooYcCPfgKNNX_h3Sl4itU7cNnnGic2dF3-Yc11UqydIRR_16EJt
SHORT: Doctors Watches Our Own Devices 2026-03-12 | First introduced in the late 1920s, Doctor's Watches were a once-popular subcategory of timepiece designed to help doctors and nurses more accurately measure a patient's pulse. In the 1930s and 40s, they were as recognizable a badge of the medical profession as a stethoscope. While the traditional rectangular form is rarely seen today, more sophisticated forms of doctors' watches known as a Pulsometers are still in widespread use. SOURCESanalogshift.com/blogs/transmissions/a-brief-history-of-the-doctor-s-watch?srsltid=AfmBOop1AZUgUEWnsqHicma0B9N9E54Gx1D_dkD8_wui4pbODqfBYEHgbowearswatches.com/timekeepers-of-care-the-legacy-and-charm-of-doctors-watcheswornandwound.com/introducing-the-archimede-doctors-watchthejewelleryeditor.com/watches/article/doctors-watches-revival-pulsometer-pulsograph
Mansfields Patent Water Finder: a Well-Crafted Hoax Our Own Devices 2026-03-09 | Patented in 1909 by Walter Mansfield and sold by W. Mansfield & Co. of Liverpool, the Patent Water Finder was, as the name implies, designed to locate subterranean sources of water and oil. However, like every other device in the history of dowsing or "water witching", it was based on unsound pseudoscientific principles and did not work as intended. Pelorus, Course Corrector, and Marine Computer video: youtu.be/Lsa_UrnO-e40:00 Introduction0:52 Kit Overview1:25 Operational Procedure2:30 Mansfield’s Explanation3:10 Dip Needles3:46 Initial Doubts4:14 Internal Compartment6:11 Schmid’s Patent6:50 History of Dowsing8:58 Schmid’s Explanation9:23 Final Debunking9:53 OutroSOURCESpubs.usgs.gov/wsp/0416/report.pdfgracesguide.co.uk/W._Mansfield_and_Cogracesguide.co.uk/1914_Who's_Who_in_Business:_Company_Mpatents.google.com/patent/GB190808673A/en?inventor=Walter+Mansfield&sort=old hodginshalls.hibid.com/lot/25439614/mansfield-s-patent-automatic-water-finderdiscovermagazine.com/holding-heavy-objects-makes-us-see-things-as-more-important-3929dailymail.co.uk/sciencetech/article-3131799/A-cheap-trick-Teardown-suggests-Beats-headphones-contain-metal-weights-make-appear-better-quality.htmlethw.org/Dipping_Needlehttps://www.abc.net.au/news/2024-03-17/history-of-water-divining-in-western-australia/103567210patents.google.com/patent/US841188A/en?oq=US+841188
Cystoscopes: Making the Bladder Gladder Our Own Devices 2026-03-04 | Only perfected in the late 19th Century thanks to the development of portable electrical lighting, cystoscopes are designed to be inserted through a patient's urethra to perform various diagnostic and surgical procedures in the bladder. This set of rigid cystoscopes was produced by the Electro Surgical Instruments Company of Rochester, New York, around 1909. 0:00 Introduction1:09 Dr. Bransford Lewis1:30 Cystoscopy: Early History3:11 French Gauge / Male and Female Models4:06 Pain Management4:43 Compound / Fixed Lens4:57 Air and Water Inflation5:37 Illumination Systems7:21 Accessories8:18 Ureteral Catheterization9:57 Misc. Accessories10:32 OutroSOURCEShttps://iiif.lib.harvard.edu/manifests/view/drs:8229903$52i. babel.hathitrust.org/cgi/pt?id=uc1.b5193551&seq=22pmc.ncbi.nlm.nih.gov/articles/PMC8726928/pdf/buffmedj138674-0005.pdfpatents.google.com/patent/US1901731A/en?q=(cystoscope)&oq=cystoscope&sort=oldresearchgate.net/publication/319908346_History_of_Cystoscopy
Lecture: the Avro C102 Jetliner Our Own Devices 2026-02-28 | Lecture delivered to the Canadian Aviation Historical Society (CAHS) Winnipeg chapter on February 26, 2026.Making its first flight in 1949, the Avro Canada Ltd. C102 Jetliner was only the second purpose-built commercial jet transport to fly (after the de Havilland Comet) and the first designed for the short-to-medium range regional market. A decade ahead of its closest competitors and loved by all who flew in it, the Jetliner seemed poised to dominate the North American aviation market. Tragically, however, due to industry conservatism, government interference, and other factors, the project was soon cancelled and the sole prototype cut up for scrap.
Mystery Object #10 ANSWER Our Own Devices 2026-02-26 | Yesterday I showed you an object I discovered at an outdoor shooting range, which I initially assumed to be a shotgun shell or flare cartridge.In reality, this is a Federal Firestick, a blank cartridge designed for use with the Traditions Nitrofire in-line muzzleloading rifle. This system addresses most of the inherent shortcomings of muzzleloading firearms while still meeting the technical definition of "muzzleloader" for use during so-called "primitive" hunting seasons. SOURCEShunter-ed.com/muzzleloader/studyGuide/In-Line-Muzzleloader/222099_88844thefirearmblog.com/blog/2020/01/23/shot-2020-federal-premium-firestickamericanhunter.org/articles/2020/1/25/new-for-2020-federal-premium-firestickfederalpremium.com/firestick.htmlmuzzleloaders.com/what-to-know-about-muzzleloaderstpwd.texas.gov/education/hunter-education/online-course/primitive-hunting/muzzleloaders
Mystery Object #10 Our Own Devices 2026-02-25 | Today's mystery object is a strange plastic cartridge I discovered at an outdoor shooting range. Think you know what it is? Please leave your guess in the comments!
I Was Hacked!!! Our Own Devices 2026-02-18 | In case you are wondering what happened to the channel this past week...For those interested in potentially tracking down the scammers, this is the phishing link I was sent: creators.skillshareforcreators.com/invite?code=creatorlaunch26And if you ever find your YouTube account hacked, unfortunately the only way of contacting Team YouTube is through X / Twitter. They will link you to a recovery page that will ask you a bunch of questions (e.g. what was the last video you uploaded etc.) and hopefully confirm your identity.
Fisher Count-O-Scope: Mid-Century Radness Our Own Devices 2026-02-08 | Introduced in 1955 by Fisher Research Laboratories of Palo Alto, California, the Count-O-Scope was a beta/gamma Geiger counter designed for performing radiometric grid surveys. It used a Victoreen 1B85 detector tube and incorporated a linear rate meter and mechanical scaler (counter) to automatically count the number of particles detected within a 30 or 60 second period. Geiger Counters video: youtu.be/iPMiG2fxBYgCAE 1002 Gammascint video: youtu.be/nNGSm3jieIMCold War Radiation Detectors video: youtu.be/XZX_T4QVUrECivil Defence Radiation Detectors videos: youtu.be/faJLf_k9UrICD 717 Gamma Survey Meter video: youtu.be/maWRvegUzqk:0:00 Introduction0:53 History of Fisher Labs3:08 Early Fisher M-Scopes6:56 Case and Accessories8:40 Victoreen 1B85 Detector Tube10:05 Controls and Readouts11:45 Batteries12:34 Circuit Analysis16:18 Later Fisher Lab History17:24 OutroSOURCEShttp://national-radiation-instrument-catalog.com/new_page_6.htmorau.org/health-physics-museum/collection/geiger-mueller-tubes/victoreen-model-1b85-gm-tube.htmlorau.org/health-physics-museum/collection/survey-instruments/mid-to-late-1940s/fisher-m-scope.htmlorau.org/health-physics-museum/collection/survey-instruments/mid-to-late-1940s/fisher-m-scope-c-12-geiger-counter.htmlorau.org/health-physics-museum/collection/survey-instruments/mid-to-late-1940s/fisher-m-scope-c-18-geiger-counter.htmlorau.org/health-physics-museum/collection/survey-instruments/1950s/fisher-uranium-scout.htmlmhs.mb.ca/docs/sites/endertonbuilding.shtmlfisher-impulse.com/aboutpatents.google.com/patent/US2066561A/enlampes-et-tubes.info/rd/1B85.pdf
SHORT: Martin-Decker Tensionmeter Our Own Devices 2026-02-05 | Marketed by the Martin-Decker Corporation of Long Beach, California, this device was used to measure the tension of control cables in aircraft such as the Douglas DC-4 / Canadair North Star. SOURCESpatents.google.com/patent/US1780141A/enpatents.google.com/patent/US1766782A/en?inventor=Goldman+Otto+Bergerpatents.google.com/patent/US3541850Anov.com/products-and-services/brands/md-totco
Ott Compensating Planimeter: Hot Integrals in Your Area Our Own Devices 2026-01-31 | Invented in the early 19th century, Planimeters are used to measure the area of irregular two-dimensional shapes such as regions on maps or cross-sections in engineering drawings. The mathematics behind their operation are extremely clever, relying on an elegant application of the Difference of Areas Theorem / Green's Theorem. 0:00 Intro1:16 Early Planimeters1:49 Hermann Planimeter2:51 Rolling Sphere Planimeters3:29 Ball-and-Disk Integrators4:38 Amsler Planimeter5:26 Ott Planimeter: Overview7:06 Ott Planimeter: Use7:34 Mathematical Principles10:43 Ott Planimeter: Accessories11:48 Other Planimeters12:10 OutroSOURCESscribd.com/document/492462245/Instruction-Manual-for-Compensating-Polar-Planimeterhttps://americanhistory.si.edu/collections/object-groups/planimeters/polar-amslerchsi.emuseum.com/objects/15726/rolling-sphere-planimeterhttps://www.mathinstruments.ch/pdf/coradi_ca1930_rolling_sphere_planimeter.pdfhttps://persweb.wabash.edu/facstaff/footer/planimeter/PreAmsler.htmpatents.google.com/patent/US2674042A/en?inventor=hermann+ott&oq=hermann+ottpatents.google.com/patent/US2834642A/en?inventor=hermann+ott&oq=hermann+otthttps://www.rechnerlexikon.de/artikel/Spezial:Patentpage&srch=Planimetercollection.sciencemuseumgroup.org.uk/search/object_type/planimeterhttps://persweb.wabash.edu/facstaff/footer/planimeter/HowPlanimetersWork.htmarchive.org/details/KeuffelEsserCompensatingPolarPlanimeters1963/page/n15/mode/2upuraone.com/PlanimeterVault/Ott/Ott-Supplement1toList302.pdfscribd.com/document/492462245/Instruction-Manual-for-Compensating-Polar-Planimeterhttp://www.mathinstruments.ch/pdf/amsler_ca1928_instructions_for_amslers_planimeter.pdfhttp://www.mathinstruments.ch/pdf/amsler_ca1928_instructions_for_amslers_planimeter.pdf
Kukri: Blade of the Gurkhas Our Own Devices 2026-01-23 | Among the most famous fighting knives of all time, the Kukri originated in Northern India and Nepal and is most closely associated with the legendary Gurkha units of the Nepalese, Indian, and British armies. But beyond its use in combat, the Kukri is also a general-purpose tool of great everyday utility and cultural significance across the subcontinent and the world.Douk-Douk Knife video: youtu.be/rh-II-t9RlkFairbairn-Sykes Knife video: youtu.be/bl5MhkdBM_U0:00 Intro1:07 Brief History of the Gurkhas2:36 Kukri Origins3:05 Design3:26 Manufacture4:06 Variations5:05 Fuller Myths5:29 Kukri Parts8:30 The “Draw Blood” Myth9:23 Ceremonial Use10:07 Combat Use11:13 OutroSOURCEShttps://salute.co.in/knowing-the-khukri/web.archive.org/web/20220125193415/himalayan-imports.com/kami.htmlansariforge.com/the-enduring-legacy-of-kukri-knives-history-craftsmanship-and-global-impactcraiglawrence.co/about-the-kukri.htmleverestforge.com/kukri-khukuri-info?srsltid=AfmBOooeYzyOoCiiy3nuKflfTPhbkfA4GxJJ57zPExbBRN-yd5dGtFkothekhukurihouse.com/khukuri-info
SHORT: Bon Zoe First Aid Kit Our Own Devices 2026-01-06 | *NOTE: at 0:54 I meant 408 and 420 Notre Dame; even and odd-numbered buildings are, of course, on opposite sides of the street. The Bon Zoe Company of Winnipeg, Manitoba operated from c. the 1930s to the 1970s and was best-known for its proprietary brand of skin ointment. It also distributed various medical supplies and First Aid Kits. MSCO First Aid Kit video: youtu.be/l7H4UjQlX9YBlacklegoids Injector video: youtu.be/H9Xiq1xlU_ATIFO CPR video: youtube.com/watch?v=VkqVz-M9mtc&pp=ygUVdG9kYXkgaSBmb3VuZCBvdXQgQ1BSSOURCESmycompanies.fandom.com/wiki/Bauer_&_Black,_Inc.wrhistoricalsociety.com/three-short-standard-oil-stories-from-1924jstor.org/stable/26654811
Stonebridge Automatic Lantern: 1900s Tacticool Camping Gear Our Own Devices 2025-12-30 | Invented by American inventor Charles H. Stonebridge and introduced in 1900, the Stonebridge 'Automatic' Folding Lantern was highly popular among campers, hikers, Scouts, and other outdoors enthusiasts and was even officially adopted by the U.S. Army and other militaries during the First World War. 0:00 Introduction0:46 C.H. Stonebridge Mfg. Co.2:16 Unfolding Process2:44 Mica / Isinglass3:55 Evolutionary Stages4:27 1900 Pattern5:03 Intermediate/Late Short Pattern6:09 Tall Patterns7:06 Replica Features7:35 Design Flaws8:16 Users9:00 Other Folding Lanterns9:26 OutroSOURCESmineralogicalrecord.com/wp-content/uploads/2023/12/LANTERNS-Kraft-The-Stonebridge-Folding-Lantern-CMR-8-DECEMBER-1998.pdf?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExTGhCQW5NUHVBcUxIZllUR3NydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR6VvKfvO28hR-Vg5_AfcsUZ2J1_xGzZ6pt0CCNxJO45FOY9nGQYSL0uEkt2Sg_aem_Zv_WPVFWlMimD7d_Jsw2tApaleotool.com/2019/08/25/the-stonebridge-folding-lantern-2ima-usa.com/products/original-u-s-wwi-medical-corps-stonebridge-automatic-folding-candle-lantern-fully-operational?variant=29470965596229thejungleisneutral.wordpress.com/2017/10/02/camp-lighting-classic-camping-style-the-folding-candle-lantern-part-1usmilitariaforum.com/forums/index.php?/topic/232683-stonebridge-folding-lanternpatents.google.com/patent/US1152571A/enpatents.google.com/patent/US963826honorableoutfitters.com/artifacts/stonebridge-folding-lanternpatents.google.com/patent/US890193A/enpatents.google.com/patent/US785772patents.google.com/patent/US662474A/en?inventor=Charles+H+Stonebridge&page=1patents.google.com/patent/US740377A/en?inventor=Charles+H+Stonebridge&page=1patents.google.com/patent/US836412A/en?inventor=Charles+H+Stonebridge&page=1patents.google.com/patent/US1152571A/en?inventor=Charles+H+Stonebridge&page=1patents.google.com/patent/US836411A/en?inventor=Charles+H+Stonebridge
SHORT: Kodak Carousel/Ektagraphic IR Remote Our Own Devices 2025-12-28 | Introduced in 1989, this accessory replaced the standard wired remote on Kodak Carousel and Ektagraphic slide projectors, allowing slides to be changed and focus adjusted more freely and from greater distances.Carousel Dissolve Control video: youtu.be/3E4bvyp-7lE
Ciné-Kodak Model B: The Dawn of Home Movies Our Own Devices 2025-12-22 | Launched in 1923, the Ciné-Kodak brand was designed to bring filmmaking to the masses, offering a line of compact and (relatively) affordable home movie cameras, projectors, and other accessories in the then-new 16mm (and later 8mm) film format.GSAP Gun Camera video: youtu.be/UrX4mnaqJBEGC-16 Gun Camera video: youtu.be/GBmZTuIN6WcPolaroid Part 1 video: studio.youtube.com/video/AVZA-4saKt0/editPolaroid Part 2 video: youtu.be/rCcJIVoqYbg Polaroid Part 3 video: youtu.be/f6LaqckayBoPolavision video: youtu.be/jb3XWVUM_qM0:00 Introduction1:09 16mm Film2:42 Ciné-Kodak Model A4:27 Model B4:59 Upper Surface5:53 Lenses6:56 Right Side7:26 Feed System8:05 Loading Process Pt.19:39 Film Gate10:32 Loading Process Pt. 211:57 Operation12:08 Safety Systems12:37 Later Models15:30 Accessories16:17 OutroSOURCESarchive.org/details/HomeMoviesWithTheCineKodak1928/page/n39/mode/2uparchive.org/details/CineKodakModelBPamphletDatedOctober11925/page/n1/mode/2uparchive.org/details/CineKodakMotionPicturesTheKodakWay1927/page/n23/mode/2uparchive.org/details/cine-kodaks-kodascopes/page/n47/mode/2uparchive.org/details/CineKodak8MmAnd16MmHomeMovieEquipment1939/page/n19/mode/2uphttp://dougkerr.net/Pumpkin/articles/Kodak_film_transport.pdfhttp://dougkerr.net/Pumpkin/articles/Kodak_movie_lens_mounts.pdfarchive.org/details/CineKodak1931D.D.TeoliJr.A.C1/page/n45/mode/2uphttp://www.libraryweb.org/~digitized/tradecats/kodak/Cine_Kodaks_1933.pdfarchive.org/details/InstructionsForTheUseOfTheCineKodakModelBF.1.9Lens1928/page/n41/mode/2upcameramanuals.org/kodak_pdf/kodak_cine-kodak_model_b.pdfhttps://collections.libraries.indiana.edu/IULMIA/files/original/38a7b7c21bdd2d34e95e02aec1c6d3b0.pdfhttp://www.vintagecameras.fr/images/MonSite/KODAK/Cine-Kodak_Special/_Doc/Cine-Kodak_Special_manuel_en.pdfkinocameras.com/apparatus/cine-kodak
Codd-Neck Bottles: Pop Culture History Our Own Devices 2025-12-12 | To get 4 months free on a 2-year NordVPN plan, please go to nordvpn.com/ourowndevicesIntroduced in 1873 by English inventor Hiram Codd, Codd-Neck or Globe-Stoppered bottles were among the first bottle designs to allow mineral water and other carbonated beverages to be widely distributed in bottled form. A secure seal was achieved using a glass marble forced by internal pressure against an internal rubber o-ring. Due to the introduction of cheaper sealing systems like "crown corks" (AKA bottle caps), Codd-Neck bottles are otherwise rarely seen today outside of Japan and India.Soda Syphons video: youtube.com/watch?v=5OQVLUzPKmk&pp=ygUbc29kYSBzeXBob24gb3VyIG93biBkZXZpY2VzTIFO Soda History video: youtube.com/watch?v=Q3tL8eeBMyQ&t=434s&pp=ygUddGlmbyB3aG8gaW52ZW50ZWQgc29mdCBkcmlua3M%3D0:00 Introduction0:43 NordVPN Integration2:29 Early Soda History3:13 The Bottling Problem3:46 Hamilton and Other Early Bottles4:32 Hiram Codd5:17 Codd Bottle Design and Function7:56 Vintage Bottles9:28 Rubber Stoppered Bottles10:10 Flip-Top Closures10:36 Codd Company History12:34 Crown Corks15:18 Japanese Ramune18:11 Indian Banta / Goli Soda20:10 Codd Bottle Trivia21:18 OutroSOURCES:web.archive.org/web/20080210023302/http://www.bottlebooks.com/Codd/an_act_of_codd.htmweb.archive.org/web/20080213034531/http://sigmafragrances.tradeindia.comkotaku.com/the-history-of-ramune-japans-national-soda-1843559594washokufood.blogspot.com/2009/07/ramune-lemonade.htmlmainichi.jp/english/articles/20240711/p2a/00m/0li/005000ceconomictimes.indiatimes.com/spending-lifestyle/top-5-must-see-rainy-destinations-in-2013/slideshow/20844478.cmsasme.org/wwwasmeorg/media/resourcefiles/aboutasme/who we are/engineering history/landmarks/174-crown-cork-soda-filling-machine.pdfhttp://www.bullworks.net/virtual/infopages/crowncork.htmarchive.org/details/sim_modern-packaging_1960-10_34_2/page/114/mode/2uppatents.google.com/patent/US468226patents.google.com/patent/US468258livemint.com/Leisure/ltG28LhAkLveUaltMmMasL/Pop-culture.htmlweb.archive.org/web/20080913063340/http://www.phrases.org.uk/meanings/235250.htmlbeachcombingmagazine.com/blogs/news/history-the-codd-neck-bottle?srsltid=AfmBOoocD7G4SZIemAU8kY3h2t8eZBBqPEZYYgWa5VpHATlN_drU5zsKkimscurios.com/2020/08/06/curious-objects-the-globe-stopper-or-codd-bottlebeachcombingmagazine.com/blogs/news/ramune-bottles-and-marbles?srsltid=AfmBOop1SMiOuIeEJf_ZUBWPLMuAfdD_4uKt9cDKHOHRHTbmUPeQOH1Thttp://stairfootstation.co.uk/rylands-and-coddhttp://www.sodasandbeers.com/SABBottleClosuresBeer.htm
Soda Syphons: Breaking Out the Bubbly Our Own Devices 2025-12-03 | Though mostly remembered today for their use in classic slapstick comedies, for nearly a century Soda Syphons were the primary means of generating and dispensing soda water and helped build the modern soft drink industry.TIFO Soft Drink video: youtube.com/watch?v=Q3tL8eeBMyQ&t=434s&pp=ygUqdG9kYXkgaSBmb3VuZCBvdXQgd2hvIGludmVudGVkIHNvZnQgZHJpbmtzTIFO Radioactive Golf Ball video: youtube.com/watch?v=f-KG1lZ4y4Y&pp=ygURcmFkaW9hY3RpdmUgYmFsbHPSBwkJIgoBhyohjO8%3DTIFO Radithor video: youtube.com/watch?v=B-ZTm0jX1Z8&pp=ygUYY3VyZSBmb3IgdGhlIGxpdmluZyBkZWFkTIFO Shoe-Fitting Fluoroscope video: youtube.com/watch?v=YgDZM2nooOM&pp=ygUud2hlbiBnb2luZyBzaG9lIHNob3BwaW5nIHdhcyBhIGdvb2Qgd2F5IHRvIGRpZQ%3D%3D0:00 Introduction1:15 Soda Water Prehistory2:06 Early Soda Syphons3:32 Soda Fountains4:27 Sparklets Model D5:56 Sparklets Bulbs7:53 Unusual Sparklets Applications10:30 Kovocas Merkuria11:06 Gasogenes11:34 Decline of Syphons12:29 OutroSOURCEShttp://museumofradium.co.uk/sparkletswoodlibrarymuseum.org/museum/sparklet-apparatussparklets.net/sparklets-historyorau.org/health-physics-museum/collection/radioactive-quack-cures/pills-potions-and-other-miscellany/sparklet-syphon.htmlsparklets.nethttps://www.yesterdaysnews.biz/post/seltzer-bottle-siphon-soda-historymedium.com/five-guys-facts/carbonated-water-99bfd630f28e#:~:text=Carbonated%20water's%20increased%20acid%20level,interesting%20ingredient%20to%20cook%20withweb.archive.org/web/20061021024417/http://www.fohbc.com/images/seltzerbottles.pdfweb.archive.org/web/20060709035142/http://www.bullworks.net/cd-web/spark.htmjournals.sagepub.com/doi/pdf/10.1177/0310057X1604400319patents.google.com/patent/US545351jeffreymorgenthaler.com/mr-plinths-soda-cart-and-the-tom-collinsweb.archive.org/web/20180822114507/http://www.bottlebooks.com/Siphons/mixing_it_up.htm
SHORT: Thorens Excelda Portable Gramophone Our Own Devices 2025-11-25 | Sold by Swiss firm Thorens GmbH from 1932-1947, the Excelda was among the first truly portable record players. It was designed to mimic the form factor of contemporary folding cameras, hence its alternative name of "Cameraphone".Edison Phonograph video: youtube.com/watch?v=_2DRLhFviFE&pp=ygUWb3VyIG93biBkZXZpY2VzIGVkaXNvbg%3D%3DEdison Fireside video: youtube.com/watch?v=fFjpRdBtoBc&pp=ygUWb3VyIG93biBkZXZpY2VzIGVkaXNvbg%3D%3DSOURCESradiomuseum.org/r/thorens_excelda.htmlartdecocollection.com/clocks-and-music/phonographs/thorens-excelda-camera-phone-phonograph-player-circa-1930s-very-rareantiquesplus.ca/shop/music/thorens-excelda-antique-portable-gramophone-swiss-made-complete-workingantiguedades.es/en/gramophones-sold/4027-antique-thorens-excelda-gramophone-2nd-version-switzerland-circa-1930s.htmlkeithwright.ca/Thorens/Thorens Excelda instructions.pdfkeithwright.ca/Thorens/radiophonomania/tranradiophono.htmlsoundofthehound.com/2011/04/20/glamorous-gramophones-and-other-early-playback-devices-4patents.google.com/patent/GB255001A/en?oq=gb255001keithwright.ca/Thorens/Thorenspage.html
Blacklegoids Veterinary Injectors - Fighting the Quarter Evil Our Own Devices 2025-11-20 | Blackleg, also known as Quarter Evil, is a severe necrotizing bacterial infection that commonly afflicts cattle, sheep, and other livestock. This kit, sold by Parke-Davis of Detroit in the 1910s and 20s, was designed to deliver proprietary "blacklegoids" solid vaccine pellets to protect against this disease.TIFO Botox video: youtube.com/watch?v=UAh1GcoC_rs&pp=ygVmVGhlIFN1cnByaXNpbmdseSBGYXNjaW5hdGluZyBTdG9yeSBvZiBPbmUgb2YgTWVkaWNpbmXigJlzIERlYWRsaWVzdCBidXQgTW9zdCBWZXJzYXRpbGUgUGhhcm1hY2V1dGljYWxzTIFO Tetanus video: youtube.com/watch?v=Dvh3_YlF_zc&pp=ygUkdG9kYXkgaSBmb3VuZCBvdXQgdGV0YW51cyBydXN0eSBuYWls0:00 Introduction0:36 Blackleg Pathology3:07 Blackleg Aggressin4:35 Blacklegoid Injectors6:05 Immunization Procedure7:36 Documentation10:15 OutroSOURCEScollections.nlm.nih.gov/bookviewer?PID=nlm:nlmuid-9703539-bkfontainesauction.com/auction-lot/parke-davis-co.-blacklegoids-cardboard-adver_FCE41C4BECabebooks.com/Bath-Tub-Pigs-Parke-Davis-Detroit/31423180692/bd#&gid=1&pid=3pmc.ncbi.nlm.nih.gov/articles/PMC10886055
SHORT: U.S. Army Target Light Our Own Devices 2025-11-17 | Entering service with the U.S. Army Corps of Engineers in the 1960s, the "Light, Target, Surveying, Self-Illuminated, With Carrying Case, For Use With Range Pole" was designed for setting up artillery batteries and conducting other triangular surveying work in low-visibility conditions. Though largely superseded by laser and GPS-based systems, such analog technologies are still carried by artillery batteries for backup purposes. SOURCEShttp://vintagemachinery.org/mfgindex/detail.aspx?id=1240https://apps.dtic.mil/sti/pdfs/ADA472744.pdfweb.archive.org/web/20070221191915/http://www.milspray.com/CARC_Technical_Paper.pdfseilerprecision.com/products/m2a2-aiming-circlenodicenoglory.com/what-are-those-red-and-white-poles-forworthpoint.com/worthopedia/surveying-target-light-vintage-1977555332https://apps.dtic.mil/sti/pdfs/AD0785549.pdfhttps://www.bits.de/NRANEU/others/amd-us-archive/FM6-2(65).pdf
SHORT: WWII Hawaii Overprint Bill Our Own Devices 2025-11-14 | Fearing an imminent Japanese invasion of Hawaii following Pearl Harbor, the U.S. Treasury replaced all currency on the islands with over $400 million in specially-overprinted bills which, if captured, could immediately be declared worthless. The feared attack never materialized, and after the war around half the overprinted bills were incinerated. The other half, however, survived and remain readily available on the collectors' market.SOURCESweb.archive.org/web/20140712104645/http://the.honoluluadvertiser.com/article/2005/Jul/27/ln/507270358.htmlweb.archive.org/web/20170123122110/cia.gov/library/readingroom/docs/STUDIES IN INTELLIGENCE NAZI - RELATED ARTICLES_0017.pdfpearlharbor.org/blog/the-history-of-the-hawaii-overprint-notecoinweek.com/hawaii-overprint-currency-notelearn.apmex.com/learning-guide/coin-collecting/hawaii-overprint-notehttps://kealakai.byuh.edu/u-s-stamps-hawaii-on-dollar-bills-after-pearl-harbor-attack
NV 5151 Drivers Goggles: a Night Vision Missing Link Our Own Devices 2025-11-11 | Developed from American SU-49/50 goggles, the NV-5151 was adopted by the Israeli Defense Forces around the 1970s/80s. A generation 0/1 device requiring active infrared illumination to operate, it was designed to allow vehicles to be driven at night using IR headlights. Metascope video: youtu.be/9hyPqMfrujgAN/PVS-2 Video: youtu.be/c0g8Dok5RQIPVS-502 video: youtu.be/8eMWRZiQEFASOURCESmodernforces.com/fieldgear_SU49.htmworthpoint.com/worthopedia/israeli-army-surplus-night-vision-506625011usmilitariaforum.com/forums/index.php?/topic/46664-itt-su49pas5-night-vision-gogglesnv-intl.com/wiki/index.php/AN/PVS-5http://prc68.com/I/PVS5NVG.shtmlsobchak.wordpress.com/tag/anpas-8web.archive.org/web/20041018160545/http://www.usaarl.army.mil/TechReports/98-28.PDF
IF DAY (2025) Our Own Devices 2025-11-04 | And now for something completely different!February 1942. In the darkest depths of the Second World War, a Winnipeg businessman hatches a brilliant scheme to sell Victory Loans and supercharge the flagging Canadian War Effort: stage a fake Nazi invasion of the city. What could possibly go wrong? An absurd and timely comedy of errors inspired by true historical events. 'If Day' was first performed at the 2025 Winnipeg Fringe Theatre Festival and filmed thanks to a generous grant from Veterans Affairs Canada.*NOTE: credits had to be removed due to copyrighted music.Written by Gilles Messier & Jess MorganDirected by Gilles Messier & Brian LanglotzProduced by Bill ZukJohnny Loewen: Andreas DetillieuxIsaac Loewen: Ken StoneEsther "Essie" Schwartz: Krista AustinSophie Schwartz: Lisa BryskiJohn Perrin: Khald NuristaniKenny Baker: Ena FerrinoMax Moritz: Élie Tardiff BreenThe Major / Johnny Canuck / Narrator: Stéphane NormandeauHenry White: Stephen GatphohJohn Smith: Vance HalldorsonGerman Soldier / Newspaper Vendor: Gilles MessierCinematography / Editor: Brad CrawfordCamera Operator: Landon LakeProduction Sound: Joel MireauStage Lighting: Max MummeryProduction Assistant: Alora Kempthorn
Armalite AR-7: the Survival Rifle Evolves Our Own Devices 2025-10-30 | Made famous by early James Bond movies like From Russia With Love, the Armalite AR-7 was developed in the late 1950s as an aircrew survival weapon and a handy, portable rifle for hikers, fishers, boaters, pilots, and other outdoor enthusiasts. Though plagued by reliability issues throughout its long history, it continues to be produced to this day.M4 Rifle Video: youtube.com/watch?v=j-BISiLKhN8&pp=ygURbTQgc3Vydml2YWwgcmlmbGU%3DTIFO Expanding Bullets Video: youtube.com/watch?v=mJw0QWofEVk&pp=ygUZdG9kYXkgaSBmb3VuZCBvdXQgZHVtIGR1bQ%3D%3DForgotten Weapons M6 / Luftwaffe Drilling Video: youtube.com/watch?v=LnHW3-aDP30&pp=ygUSbHVmdHdhZmZlIGRyaWxsaW5nForgotten Weapons AR-1 Parasniper Video: youtube.com/watch?v=neyvB5I-5p8&pp=ygUPYXItMSBwYXJhc25pcGVyForgotten Weapon AR-17 Video: youtube.com/watch?v=67tUMc__xHc&pp=ygUFYXItMTc%3D0:00 Intro0:55 Early Survival Rifles2:05 M4 Survival Rifle2:21 M6 Survival Weapon2:55 Armalite4:23 AR-56:05 AR-7 Origins6:22 Assembly8:50 Markings9:39 Early AR-7 History10:21 James Bond11:40 Variants and Aftermarket Parts12:22 Charter Arms12:51 Explorer II Pistol14:18 Survival Arms and Henry14:35 Reliability Issues16:47 Shooting18:30 Henry Improvements19:49 Israeli Survival Rifle20:09 OutroSOURCESpatents.google.com/patent/USD179499www.youtube.com/watch?v=neyvB5I-5p8web.archive.org/web/20230331195956/americanrifleman.org/content/the-unlikely-resilience-of-the-ar-7-survival-riflecalibremag.ca/henry-survival-rifle-the-ar-7-todayamericanrifleman.org/content/a-look-back-at-the-armalite-ar-7-explorerhwsportsman.net/AR7.phpnramuseum.org/guns/the-galleries/innovation,-oddities-and-competition/case-22-the-weird-and-the-wonderful/armalite-ar-7-explorer-rifle.aspxthefirearmblog.com/blog/2022/09/26/rimfire-report-charter-arms-explorer-ii-ar7-pistol-reviewscribd.com/document/466017200/charter-arms-ar-7-explorer-serial-number-pdf#download
SHORT: MSCO First Aid Kit Our Own Devices 2025-10-23 | The practice and tools of First Aid have evolved considerably over the past century. Manufactured by the Medical Supply Company Inc. or MSCO of Rockford, Illinois sometime in the 1960s, this First Aid Kit contains a number of intriguing items not commonly seen anymore. TIFO Band-Aid video: youtube.com/watch?v=ndt_youihno&pp=ygURdG9kYXkgaSBmb3VuZCBvdXQ%3DTIFO Smelling Salts video: youtube.com/watch?v=nzFBiN88ugI&pp=ygURdG9kYXkgaSBmb3VuZCBvdXQ%3DTIFO CPR video: youtube.com/watch?v=VkqVz-M9mtc&pp=ygVLZnJvbSBiZWxsb3dzIHVwIHlvdXIgYnV0dCB0byBhbm90aGVyIG9uZSBiaXRlcyB0aGUgZHVzdCAtIHdobyBpbnZlbnRlZCBjcHI_TIFO Defibrillator video: youtube.com/watch?v=UbIBajs_q_I&pp=ygUfdG9kYXkgaSBmb3VuZCBvdXQgZGVmaWJyaWxsYXRvcg%3D%3DSOURCEShttps://museumofhealthcare.blog/scents-sensibility-awakening-the-fashionable-history-of-victorian-era-smelling-salts/si.com/nhl/2016/03/17/smelling-salts-nhl-playershttps://uspto.report/TM/72137644etsy.com/ca/listing/915988249/msco-first-aid-medical-supply-companyresuscitationjournal.com/article/S0300-9572(07)00168-2/abstractpmc.ncbi.nlm.nih.gov/articles/PMC1071544
SHORT: Gescha Junior Model 3 Toy Typewriter Our Own Devices 2025-10-19 | Manufactured by German toy manufacturer Gebruder Schmidt Nürnberg (AKA GSN or Gescha), the Junior was a remarkably sophisticated toy typewriter, featuring sturdy stamped-steel construction, ribbon typing, and upper/lowercase capability. Widely exported across Europe and to North America, various versions were manufactured and sold between 1936 and 1965. Simplex Typewriter video: youtu.be/KniIDE1iX1YSOURCEStype-writer.org/?p=1030https://nuernberginfos.de/traditionsfirmen-aus-nuernberg/gescha-patentspielwaren.phptypewriter.be/juniorgsn.htmoztypewriter.blogspot.com/2011/05/junior-typewriters.htmlhttps://www.ebay.com.au/itm/256908506498?mkevt=1&mkcid=1&mkrid=705-53470-19255-0&campid=5338722076&customid=&toolid=10050subastasdarley.com/zh/subasta-typewriter-junior-gsn-circa-1920-67854https://collection.powerhouse.com.au/object/42630
Blasting Machines: Not Just for Wile E. Coyote Our Own Devices 2025-10-12 | While commonly associated in pop culture with the likes of the Looney Tunes, Blasting Machines are practical tools which have been used in mining, construction, and many other industries for over a century and a half. In this video, we look at three different models of blasting machines:-Dominion Electrical Works plunger machine (c.1930s)-Exploders Dynamo Mk.VII (1940s-50s)-Exploder Dynamo-Condenser Mk.II/III (1950s/60s)Dynamite and Viagra TIFO Video: youtube.com/watch?v=BtSL5qoQZD8&pp=ygUadG9kYXkgaSBmb3VuZCBvdXQgZHluYW1pdGU%3DU.S.S. Vesuvius 'Dynamite Cruiser' TIFO Video: youtube.com/watch?v=XJXOkHwtqV0&pp=ygUadG9kYXkgaSBmb3VuZCBvdXQgZHluYW1pdGU%3D 0:00 Introduction0:50 Black Gunpowder1:50 Nitroglycerine3:08 Dynamite and Blasting Gelatin4:35 Blasting Caps5:23 Dominion Electrical Works Machine6:10 Internal Components 7:19 Plunger Machine Styles7:55 Three-Terminal Machines9:32 Blasters Dynamo Mk.VII11:17 Plunger Setup11:56 Internal Components13:15 Exploder Dynamo-Condensor Mk.II/III14:22 Crank Handle Setup15:15 Mk.II or III?15:35 Internal Circuitry17:07 Current Blasting Technology17:29 OutroSOURCESpatentimages.storage.googleapis.com/cd/7c/ba/5f4990cd63b384/US2908847.pdfbiodiversitylibrary.org/item/80719#page/27/mode/1uphttp://halslamppost.com/Mining Catalogs and Brochures/1918 Mining Catalog.pdfdigital.sciencehistory.org/works/j58a3jo/viewer/9rs99xlcdn.preterhuman.net/texts/terrorism_and_pyrotechnics/explosivesDemolition_Blasting_Sabotage/Dupont Blasters Handbook 1922 ed.pdfhttp://halslamppost.com/Mining Catalogs and Brochures/1921 Keystone Mining Catalogue.pdfhttps://www.awm.gov.au/collection/REL35125?image=2worthpoint.com/worthopedia/exploders-dynamo-mk-vii-ww2-uk-1850617267bocn.co.uk/threads/blasting-machines.70377/page-2#google_vignetteiwm.org.uk/collections/item/object/30019877https://www.henrysmilitarycollectables.com.au/products/sold-items/wwii-australian-army-exploders-dynamo-mk-vii-detonator-blasting-machine-sold.aspxpatents.google.com/patent/GB598459A/en?oq=GB598459hatchfive.wordpress.com/2018/01/10/mk-ii-beethoven-exploder-condenser-unitpatents.google.com/patent/US534289A/enpatents.google.com/patent/US436023A/en
Ford Model T Ignition Coil: a Spark of Genius Our Own Devices 2025-10-03 | [ERRATUM: I accidentally misspoke and stated that the "D" in DELCO stood for DETROIT rather than DAYTON]Early Ford vehicles from the Model A (1903) through the Model T (1908-1927) used an electrical ignition system based on "trembler" coils, high-voltage, high-frequency transformers adapted from the classic induction or Ruhmkorff coil. But while effective, this system struggled to achieve accurate ignition timing and was eventually replaced by the more reliable DELCO ignition coil system. Medical Coils video: youtu.be/NufNhuWI1iAPocket Battery No.1 video: youtu.be/RCANKMhbGjw0:00 Introduction0:46 Non-Electrical Ignition1:55 Ford Make-and-Break System3:22 Trembler Coil Overview4:11 Induction Coil Theory7:17 Commutator/Distributor7:52 Trembler Coil Box8:24 Electrical System Evolution9:57 Trembler Coil Shortcomings11:07 Master-Slave Coil Systems11:28 Joseph Williams Improvements12:36 DELCO Ignition System14:27 Other Ignition System15:28 Ford Trembler Coil Evolution19:15 OutroSOURCEShttp://www.aeroelectric.com/Reference_Docs/Books/Model_T_Ignition_System.pdfhistory.com/this-day-in-history/august-29/charles-f-kettering-inventor-of-electric-self-starter-is-bornhttps://www.denso-am.eu/news/deneur21_04_ignition-coil-basic-principleshotrod.com/how-to/inductive-vs-capacitive-discharge-ignition-systems#google_vignettecurbsideclassic.com/automotive-histories/automotive-history-the-history-of-electronic-ignition-losing-the-points-part-1patents.google.com/patent/US1223180A/enmodeltcentral.com/Model-T-Ford-Electrical-Specifications.htmllarescorp.com/toolbox/skinned-knuckles-articles/the-model-t-ford-buzz-coillarescorp.com/toolbox/skinned-knuckles-articles/the-model-t-ford-buzz-coil
Portable VASI: Come Crash at My (Heli)Pad Our Own Devices 2025-09-22 | Visual Approach Slope Indication (VASI) system are used at airports to give pilots a visual indication of their approach angle relative to the proper glideslope. In this video, we look at a portable tri-colour VASI designed for use at heliports, which may or may not have been used by the Canadian Armed Forces.0:00 Introduction2:00 Classic VASI3:09 T-VASI3:36 Other VASI Styles4:33 PAPI5:34 VASI Unit Setup7:47 External Controls8:39 Projector Disassembly9:12 Base Disassembly9:38 OutroSOURCESfaa.gov/sites/faa.gov/files/16_phak_ch14_0.pdfweb.archive.org/web/20090904034137/http://www.faa.gov/air_traffic/publications/ATpubs/AIM/Chap2/aim0201.htmlhttps://www.dst.defence.gov.au/innovation/tee-visual-approach-slope-indicator-system-t-vasispilotinstitute.com/vasi-vs-papi-differences
PVS-502: Gen 2 Night Vision for Canada Our Own Devices 2025-09-18 | Originally developed for the civilian market as the Varo 9823E Hyper-Miniscope, the PVS-502 was a Generation 2 passive ‘Starlight’ scope officially adopted by the Canadian Armed Forces in 1976. Initially issued with adaptors for mounting on the C1, C2, and C3 7.62x51mm NATO rifles and the 84mm Carl Gustav recoilless rifle, the PVS-502 was later used as a handheld monocular before being retired sometime in the 1990s.Metascope video:AN/PVS-2 video:0:00 Introduction1:00 NVG Generations Summary2:31 Carrying Case2:58 Objective Assembly 3:46 Intensifier Tube4:09 Battery Compartment4:40 Ocular Assembly5:01 Weapons Mounts5:25 C1 Mount Installation6:31 Reticle7:16 Replacement7:38 Outro
SHORT: VSh-1 Vetrochet Course Corrector Our Own Devices 2025-09-15 | Invented by B.V. Sterligov in 1927, the VSh-1 was a simple course corrector / wind drift calculator used by Soviet pilots for over 50 years. E6B Computer video: youtu.be/__0F6JAXj8U Jeppesen CR-3 Computer video: youtu.be/FDje5ASk_NcSOURCES:ebay.com/itm/203967367086rechenschieber.org/RussianPilotSlideRules.pdfhttp://www.flight-computer.de/Air-Navigation-Computers.pdf
Simplex: the Plankton of Typewriters Our Own Devices 2025-09-12 | Invented in the 1890s, dial typewriters were originally intended as an inexpensive (albeit inconvenient to use) alternative to proper keyboard typewriters, but later repurposed into popular children's toys that were sold well into the 1950s. 0:00 Introduction0:52 Early Typewriters1:52 Herrington Typewriter3:07 Origins of Simplex4:00 Simplex Special No.16:00 Transition to Toys6:30 Simplex Special Demonstrated A7:26 Louis Marx & Co.9:07 Marx Dial Typewriter10:40 OutroSOURCEShttps://www.sommeregger.name/typewriters/files/patente/USD133266.pdfartsandculture.google.com/asset/typewriter-junior-dial-typewriter-louis-marx-company/ZgH1KWIvmp96ow?hl=encollectorsweekly.com/toys/marxmycompanies.fandom.com/wiki/Simplex_Typewriter_Companyantikeychop.com/universasimplextypewriterpatents.google.com/patent/US299785https://site.xavier.edu/polt/typewriters/simplex.htmlantiquetypewriters.com/typewriter/simplex-1-typewriteroztypewriter.blogspot.com/2012/06/simplex-typewriter-glorious-simplicity.htmltypewriterdatabase.com/Marx+Toys.Typewriter.764.bmyspatents.google.com/patent/US696304A/en?oq=US696304patents.google.com/patent/US621628A/en?oq=621628patents.google.com/patent/US781473A/en?oq=US+781473patents.google.com/patent/US1138427A/en?oq=US+1138427patents.google.com/patent/US1204912A/en?oq=US+1204912+patents.google.com/patent/US1521408A/en?oq=US+1521408patents.google.com/patent/US1865288A/en?oq=US+1865288patents.google.com/patent/US1867426A/en?oq=US+1867426patents.google.com/patent/US1957373A/en?oq=US+1957373oztypewriter.blogspot.com/2011/09/on-this-day-in-typewriter-history-cxvi.html
Mystery Object #9 ANSWER Our Own Devices 2025-09-03 | Yesterday, I showed you a small metal box with a cocking lever and trigger button which, when depressed, releases a set of ten sharp, semi-circular blades. As I hope most of you guessed, this is a scarificator, a device invented in the early 18th Century to perform the procedure of bloodletting, tied to the defunct four humours theory of medicine.TIFO Leeches video: youtube.com/watch?v=RlrLowgTBlY&pp=ygUZdG9kYXkgaSBmb3VuZCBvdXQgbGVlY2hlcw%3D%3DTIFO Radical Colostomy video: youtube.com/watch?v=nRIwlnZEdCU&pp=ygUgdG9kYXkgaSBmb3VuZCBvdXQgcmVtb3ZpbmcgYnV0dHM%3DTIFO Staff of Asclepius video: youtube.com/watch?v=jzCSHn6aIp8&pp=ygUhdG9kYXkgaSBmb3VuZCBvdXQgc25ha2UgYW5kIHN0YWZmSOURCESartefact.museumofhealthcare.ca/?p=193https://blogs.library.duke.edu/rubenstein/2020/04/27/scarificators-design-of-medical-instruments/collection.sciencemuseumgroup.org.uk/objects/co8032609/scarificatorvanleestantiques.com/product/scarificator-2collection.sciencemuseumgroup.org.uk/objects/co142664/brass-scarificator-with-twelve-bladesvanleestantiques.com/product/brass-spring-fleammapleridgemuseum.org/history-of-the-phleem-fleamballyhooseattle.com/products/antique-12-blade-scarificator-blood-letting-toolebay.ca/itm/115742208024flintsauctions.com/auction/lot/26-medical-bleeding-spring-lancet-and-scarificator/?lot=15686&sd=1vanleestantiques.com/product/mathieu-scarificatorhttps://dec.hsls.pitt.edu/s/artifacts/item/3319archive.org/details/illustrationsofs00knys/page/1150/mode/2upnytimes.com/1926/08/03/archives/knyscheerer-co-to-move-makers-of-surgical-instruments-lease-factory.htmlradiomuseum.org/dsp_hersteller_detail.cfm?company_id=13960gutenberg.org/files/33102/33102-h/33102-h.htm
Mystery Object #9 Our Own Devices 2025-09-02 | Today's object is a small, handheld metal box with a cocking lever and trigger button which, when pressed, releases a set of 10 sharp, semi-circular blades.Think you know what it is? Leave your answer in the comments and I will see you tomorrow in a follow-up video where I will reveal the correct answer!
SHORT: Bruguière No.1 Stereoscope Our Own Devices 2025-08-22 | Founded in 1946, Stéréofilms Bruguière was one France's most successful manufacturers of stereo photos and viewers, producing a wide variety of products until finally being bought out and shut down in 1974.Viewmaster videos:youtu.be/_vpIm_U9e1Myoutu.be/PSyWSrkkNQAyoutu.be/7RbojwBdc1YTru Vue video: youtu.be/a9wie5vk8M0ColorScope video: youtu.be/mg-nf9P_EJYSOURCES: vintageviewers.com/bruguiere-7-stereo-viewerviewmaster.co.uk/htm/colorelief.asp#clicimagestereoscopiques.com/stereopedia/les-editeurs/bruguiere-editionsvintageviewers.com/rolland-stereoscopevintageviewers.com/lestrade-simplexhttp://www.collection-appareils.fr/visionneuses/html/visio.php
Tefifon: West Germanys Weird 1950s Audio Format Our Own Devices 2025-08-18 | Developed in 1936 but not commercialized until 1950, the Tefifon was a unique German audio format that used cartridges filled with long flexible plastic tapes scribed with single continuous audio tracks. Though capable of recording up to four hours of high-quality audio, Tefifon could not compete with more conventional, established audio formats and, while briefly popular in West Germany in the 1950s and 60s, never caught on elsewhere and eventually disappeared from the market. Edison Fireside Phonograph video: youtu.be/fFjpRdBtoBcWire Recorder video: youtu.be/c_9DUSq0qJMSean Munger’s JFK Assassination video: youtube.com/watch?v=DC8tO16xdrY&t=10s&pp=ygUTc2VhbiBtdW5nZXIga2VubmVkeQ%3D%3D0:00 Intro1:38 Dictation Machines4:12 Dictabelt6:15 Other 1940s Dictation Formats6:49 Tefifon Origins8:31 Tefifon Evolution9:71 Tefifon HS-AT10:03 Tefi Cartridges10:16 Loading and Playing10:55 Internals13:00 Disk Adaptor13:23 Track Skipping14:07 Advantages / Disadvantages15:44 Downfall16:12 OutroSOURCESrecordinghistory.org/the-history-of-sound-recording/business/building-the-american-dictating-machine-industry/postwar-diversityhttps://vintage-technics.ru/Eng-Gray_D6.htmweb.archive.org/web/20160826223132/http://www.recording-history.org/HTML/dicta_biz6.phpcreativepro.com/scanning-around-gene-funny-doesn-t-sound-meobsoletemedia.org/tefifonradiomuseum.org/forum/tefi_cassettes_how_were_they_produced.htmlgizmodo.com/a-look-at-the-tefifon-germanys-doomed-1950s-music-play-1696294961retroist.com/p/tefifons-omni-entertainment-systems-and-vincent-prices-shrunken-headssoundandscience.net/artefacts/the-tefifon-tape-playerhttp://historysdumpster.blogspot.com/2015/04/the-tefifon.htmllathetrolls.com/viewtopic.php?t=10228https://www.radio-bastler.de/forum/index.php?thread/19213-totalrestaurierung-tefifon-hs-teil-1/
Fiestaware: Uranium in the Cupboard Our Own Devices 2025-08-08 | Prior to the discovery of nuclear fission in the late 1930s, Uranium was largely a byproduct of Silver and Radium extraction, used mainly as a cheap colouring agent for glass and ceramic glazes. And perhaps the most famous commercial product to use uranium glaze was Fiestaware, a colourful and highly popular line of dinnerware introduced in 1936 by the Homer Laughlin China Company of Newell, West Virginia and still produced to this day. Uranium Glass Video: youtu.be/dYc2Z6g54fMTritium Lights Video: youtu.be/NhXNJgZD6NATIFO CANDU Video: youtube.com/watch?v=i1RNr-PZkxA&pp=ygUXdG9kYXkgaSBmb3VuZCBvdXQgY2FuZHU%3DTIFO Radithor Video: youtube.com/watch?v=B-ZTm0jX1Z8&pp=ygUddG9kYXkgaSBmb3VuZCBvdXQgbGl2aW5nIGRlYWQ%3DTIFO Radioactive Glow Video: youtube.com/watch?v=DsEwF75-4lU&pp=ygUidG9kYXkgaSBmb3VuZCBvdXQgcmFkaW9hY3RpdmUgZ2xvdw%3D%3DTIFO Depleted Uranium Shell Video: youtube.com/watch?v=9W_nMRbIlZI&pp=ygUidG9kYXkgaSBmb3VuZCBvdXQgZGVwbGV0ZWQgdXJhbml1bQ%3D%3DTIFO Radiation Exposure Video: youtube.com/watch?v=mFA6IXu37Pc&pp=ygUldG9kYXkgaSBmb3VuZCBvdXQgcmFkaWF0aW9uIGJvZHkgdGFrZQ%3D%3D0:00 Introduction0:55 Early Uses of Uranium1:28 Pitchblende2:25 Discovery of Uranium3:13 Uranium Yellowcake5:43 The Radium Boom7:35 Fiestaware Origins8:44 Fiestaware Red-Orange9:03 Other Uranium Glazes10:42 Plant Tuscan China11:26 Discovery of Fission12:25 Depleted Uranium13:08 Later Fiestaware History15:00 Radioactive Hazard16:37 OutroSOURCESorau.org/health-physics-museum/collection/consumer/ceramics/fiestaware.htmlorau.org/health-physics-museum/collection/consumer/ceramics/radioactive-tiles.htmlorau.org/health-physics-museum/collection/consumer/ceramics/uranium-containing-dentures.htmlfiestafactorydirect.com/pages/our-historyweb.archive.org/web/20160303172652/http://www.pdhealth.mil/downloads/Civil_Use_of_DU.pdfweb.archive.org/web/20030216063023/http://www.hlchina.com/FIESTARETAILNEWYORKTIMES.htmnrc.gov/reading-rm/basic-ref/glossary/yellowcake.htmliaea.org/sites/default/files/publications/magazines/bulletin/bull59-2/5922223.pdfreplacements.com/china-tuscan-royal-tuscan/b/001-801304?srsltid=AfmBOop4JxDShR1OzcPTD9EW0ATxVM2xR1sL3AZjE4CUEpsqI3IVePeugidodevyq.wordpress.com/2020/04/03/dating-tuscan-chinathepotteries.org/mark/p/plantrhsl.htmllink.springer.com/article/10.1007/BF02385956digitalfire.com/hazard/uranium+in+ceramic+glazesniche-canada.org/2022/05/24/radioactive-pottery-and-the-beginning-of-the-canadian-atomic-agenrc.gov/docs/ml0829/ml082910862.pdf
Jeppesen CR-3 Flight Computer: the E6Bs Cool Cousin Our Own Devices 2025-08-01 | While the E6B “Whiz Wheel” is the most popular mechanical flight computer still in common use, there are many alternative designs, including the Jeppesen CR-3. Patented in 1955 and manufactured by Jeppesen-Sanderson, a company with a long and storied history in aviation navigation, the CR-3 dispenses with the slider used by Dalton-style computers, instead using a more compact disc mechanism to perform wind triangle calculations.E6B video: youtu.be/__0F6JAXj8UPelorus / Course Corrector video: youtu.be/Lsa_UrnO-e4Drift Sights video: youtu.be/weT_cEWoCBQ0:00 Introduction0:50 Elrey Jeppesen2:21 Jeppesen & Co. And “Jepp Charts”3:36 Other Flight Computers4:15 CR-3 Patents 4:38 Time-Speed-Distance 6:00 Fuel Consumption6:08 Unit Conversions7:13 Altitude9:11 Airspeed11:26 Mach Number12:45 Wind Side13:33 Magnetic/True Course Conversion14:02 Crab Angle16:36 Wind Calculation18:07 True Course / Ground Speed19:50 True Heading / Airspeed21:05 Off-Course Correction22:03 OutroSOURCESnews.google.com/newspapers?id=YMheAAAAIBAJ&sjid=TTIMAAAAIBAJ&pg=2353,4035993web.archive.org/web/20100719164330/http://magazine.continental.com/200907-continental-factshttp://sliderulemuseum.com/Aerospace.shtmlweb.archive.org/web/20120627082136/http://airportjournals.com/Display.cfm?varID=0702007web.archive.org/web/20150330005224/http://dmairfield.com/people/jeppesen_eb/index.htmlweb.archive.org/web/20061130085748/http://www.newyorker.com/talk/content/articles/061030ta_talk_mayerpatents.google.com/patent/US2767919A/enhttps://physicsmuseum.uq.edu.au/sites/default/files/CR-3-Instructions.pdfhttp://www.flight-computer.de/Air-Navigation-Computers.pdf
Lecture: Canada and Nuclear Weapons 1963-1984 Our Own Devices 2025-07-01 | [NOTE: at 6:20 I state that the Mount Kologet B-36 crash took place on February 15, 1950 and 4 crew died. It actually took place on the morning of February 14 and 5 men died: one in the aircraft and four after parachuting into the sea.]Happy Canada Day, everyone!While the True North Strong and Free is not typically associated with weapons of mass destruction, for 20 years during the Cold War, Canada was a nominal nuclear-armed power, deploying four different nuclear weapons systems as part of its commitments to NORAD and NATO. However, these weapons were not technically owned by Canada, remaining under American custody under a ‘key sharing’ agreement until released to Canadian personnel in time of war. Lecture delivered to the Manitoba chapter of the Canadian Aviation Historical Society (CAHS) in Winnipeg on June 26, 2025. 0:00 Introduction1:50 Canada and he Manhattan Project5:04 American Nukes on Canadian Soil8:26 NORAD / NATO Before Nuclear Weapons10:32 The Decision to Acquire Nuclear Weapons15:18 Boeing CIM-10 BOMARC23:09 Canadair CF-104 Starfighter28:16 Douglas MGR-1 Honest John31:37 Douglas AIR-2 Genie35:23 Political Opposition37:09 Operational Issues42:36 End of an Era / OutroSOURCES:Clearwater, John, Canadian Nuclear Weapons, Dundurn Press, Toronto, 1998Burns, Robert, Bombs in the Bush, Canada’s History, January 17, 2017, canadashistory.ca/explore/politics-law/bombs-in-the-bushCanada, ICAN, icanw.org/canadaErnest Harmon Air Force Base, Stephenville, Hidden Newfoundland, hiddennewfoundland.ca/harmon-air-force-baseThe Nuclear Question in Canada, Diefenbaker Canada Centre, diefenbaker.usask.ca/exhibits/online-exhibits-content/the-nuclear-question-in-canada-en.phpNuclear Disarmament and Non-Proliferation, Government of Canada, international.gc.ca/world-monde/issues_development-enjeux_developpement/peace_security-paix_securite/nuclear_radiological-nucleaire_radiologique.aspx?lang=engCanada's Cruise Missile Testing Controversy of 1983, CBC, July 15, 2018, cbc.ca/archives/canada-s-cruise-missile-testing-controversy-of-1983-1.4744435
Trinitite: Dawn of the Atomic Age Our Own Devices 2025-06-29 | [NOTE: at 8:39 I state that Co-60 in Trinitite was formed by neutron activation of Co-59 in steel components. Another, more likely pathway is the neutron activation of Fe-58 in steel into Fe-59, which decays via beta emission into Co-60 with a half-life of 44.5 days.]Trinitite is glass formed from sand melted by nuclear explosions - particularly the very first, the Trinity Test, detonated near Alamogordo, New Mexico, on July 16, 1945. A diverse mineral found in many forms and colours and containing a witch's brew of radioisotopes, the composition of Trinitite reveals much about the chemistry, physics, and engineering pioneered by the Manhattan Project. 0:00 Introduction1:02 Trinity Yield Analysis1:57 Sampling Sherman Tanks3:28 Ground Zero4:27 Naming Trinitite5:00 Forms of Trinitite5:36 Mineralogy of Trinitite6:24 Trinitite Formation Theories7:27 Trinitite Colours7:56 Trinitite Trace Elements9:01 Authenticating Trinitite10:11 Safety of Trinitite11:00 Politics of Trinitite11:49 Collecting Trinitite12:40 OutroSOURCESatlasobscura.com/articles/trinitite-trinity-test-mineral-cultural-jewelryhttp://www.helfordgeoscience.co.uk/wp-content/uploads/2017/01/Eby-et-al-2015.pdfcontent.time.com/time/subscriber/article/0,33009,854500-1,00.htmlweb.archive.org/web/20080726072410/http://www.wsmr.army.mil/pao/TrinitySite/NewTrinititeTheory.htmgizmodo.com/researchers-find-forbidden-quasicrystal-in-wake-of-nu-1846917496web.archive.org/web/20210524001335/http://enformable.com/2014/07/authenticating-trinitite-nearly-70-years-laterreddit.com/r/Radioactive_Rocks/comments/rktzq6/trinitite_gamma_spectroscopy_and_an_interestinggammaspectacular.com/phpBB3/viewtopic.php?t=825&srsltid=AfmBOopoM3wMpfiXCmlDaIltmE32Qo_SdtRvKv_gy0Bvj33s9O2Qg54Iorau.org/health-physics-museum/collection/nuclear-weapons/trinity/trinitite.htmlthebulletin.org/2020/07/in-their-own-words-trinity-at-75tandfonline.com/doi/full/10.1080/00295450.2021.1951538#d1e263pnas.org/doi/10.1073/pnas.2101350118
SHORT: Handheld Refractometer Our Own Devices 2025-06-24 | Invented in the late 19th Century, Refractometers measure the concentration of dissolved solids in liquids by measuring said liquids’ index of refraction. They are used in a wide variety of fields, including brewing and winemaking, medicine, aquarium keeping, automotive maintenance, and industrial processes. 0:000:23 Snell’s Law 0:52 Refractometer Theory1:43 Refractometer History3:57 Traditional Handheld Refractometer5:38 Usage Procedure6:33 Other Applications7:55 OutroSOURCESbulkreefsupply.com/content/post/how-to-use-a-refractometer-to-measure-salinitydocs.rs-online.com/87e0/0900766b8168679c.pdfhttps://homepages.uc.edu/~jensenwb/museum-booklets/03. Refractometers.pdftechnologynetworks.com/applied-sciences/articles/the-refractometer-how-it-works-and-role-in-the-food-industry-369653https://www.refractometer.pl/refractometer-historyreef2reef.com/threads/refractometers-and-the-color-of-light-used-important.174558researchgate.net/profile/Richard-Paselk/publication/286173968_The_evolution_of_the_Abbe_refratometer/links/59acc3f6aca272f8a1589191/The-evolution-of-the-Abbe-refratometer.pdf
Tritium Beta Lights: the Cool Glow of Radioactivity Our Own Devices 2025-06-18 | Used in a variety of applications including gunsights, compasses, and emergency exit signs, "beta lights" convert the beta radiation emitted by Tritium - a heavy isotope of hydrogen - into visible light. They are one in a long line of radioluminescent devices starting with Radium luminous paint, introduced in the early 1900s. Tritium also has a wide variety of other applications, most notably in boosted fission and thermonuclear weapons. TIFO CANDU Video: youtube.com/watch?v=i1RNr-PZkxA&pp=ygUXdG9kYXkgaSBmb3VuZCBvdXQgY2FuZHU%3DTIFO Hydrogen Bomb Video: youtube.com/watch?v=WBs6iLbKki8&pp=ygUfdG9kYXkgaSBmb3VuZCBvdXQgaHlkcm9nZW4gYm9tYtIHCQneCQGHKiGM7w%3D%3DTIFO Radiation Video: youtube.com/watch?v=mFA6IXu37Pc&pp=ygUldG9kYXkgaSBmb3VuZCBvdXQgcmFkaWF0aW9uIGJvZHkgdGFrZQ%3D%3D0:00 Introduction1:07 Properties of Tritium3:10 Discovery of Tritium4:42 Thermonuclear Weapons: Introduction10:48 Boosted Fission Weapons13:21 Teller-Ulam Design20:00 Radioluminescent Lighting20:39 Radium-22623:13 Promethium-14723:54 Strontium-9025:05 Tritium (Beta) Lights26:26 False Origins of Beta Lights 28:38 Tritium Safety29:23 Tritium Paint29:44 Other Applications30:51 Tritium Production31:21 OutroSOURCESuwaterloo.ca/earth-sciences-museum/resources/detailed-rocks-and-minerals-articles/tritiumpubmed.ncbi.nlm.nih.gov/36083730patents.google.com/patent/US2749251A/en?oq=2749251chemteam.info/Chem-History/Rutherford-1934a/Rutherford-1934a.htmlorau.org/health-physics-museum/collection/radioluminescent/sight-for-law-rocket-launcher.htmlorau.org/health-physics-museum/collection/radioluminescent/tritium-exit-sign.htmlorau.org/health-physics-museum/collection/radioluminescent/tritium-sight-for-m-16-rifle.htmlassets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/946070/JSP_392_Chapter_19_-_GTLS_-GTLD__Alt_Text_.pdfperezcope.com/2019/11/30/luminor-2020-debunking-panerais-fictional-history-of-tritium-based-lumeorau.org/health-physics-museum/collection/radioluminescent/index.htmlpatents.google.com/patent/US4677008A/enhttp://national-radiation-instrument-catalog.com/new_page_37.htmmcgill.ca/oss/article/technology-you-asked/what-tritium-painthorolonomics.com/2020/05/the-history-of-radioactive-rolex-with.htmlwatchprosite.com/rolex/rolex-and-radioactivity/732.901183.6169193
Carbon Monoxide Detectors: Clear and Present Danger Our Own Devices 2025-05-31 | In previous videos we have examined a variety of vintage heat and smoke-activated home fire alarms. However, fires also produce another, more insidious combustion product: carbon monoxide. Starting in the 1980s, a number of different sensor technologies have been developed to detect this invisible killer, including electrochemical, biomimetic, infrared, and semiconductor types.Fire Alarm Videos:youtu.be/CGeS9WI1tmYyoutu.be/xt5fC1CApe8youtu.be/I6Nl_PX9WQ8youtu.be/Ss2kCafHRsYMining Safety Videos:youtu.be/kuHeqCp0bWMyoutu.be/izpP51DFjFEyoutu.be/i8XHV3CaBIISOURCESpatents.google.com/patent/US2569895A/enpatents.google.com/patent/US1644014A/enehow.com/about_6679022_history-carbon-monoxide-detector.htmlinsights.globalspec.com/article/7626/the-evolution-of-your-carbon-monoxide-detectorspectrum.ieee.org/the-consumer-electronics-hall-of-fame-brk-first-alert-smoke-alarmpatents.google.com/patent/US5331310A/encoleparmer.ca/tech-article/the-theory-behind-carbon-monoxide-electrochemical-sensorspatents.google.com/patent/US5063164A/enhome.howstuffworks.com/home-improvement/household-safety/carbon-monoxide-detector.htm#:~:text=Biomimetic sensor technology reproduces CO's,processor to sound the alarm.cpsc.gov/s3fs-public/pdfs/COAlarmConformanceReportPhaseI.pdfpatents.google.com/patent/EP1832873A1/en?q=(carbon+monoxide)&assignee=kidde&oq=kidde+carbon+monoxide&page=2
Nixie tubes: the OG Digital Display Our Own Devices 2025-05-26 | Introduced by the Burroughs Corporation in the mid-1950s, Nixie tubes were cold-cathode numerical displays used in various devices including scientific instruments and stock tickers through the 1970s, when they were largely replaced in the West by more sophisticated and cost-effective display technologies. However, they remained in production in the Soviet Union until its collapse in the early 1990s, and have recently experienced a surge of popularity among electronic hobbyists for their unique retro aesthetics.Geiger Counters video: youtu.be/iPMiG2fxBYgSOURCESweb.archive.org/web/20130822171631/http://www.vintagecalculators.com/html/calculator_displays.htmlspectrum.ieee.org/nixie-tubesteampunkalchemy.com/en/nixie-tubeshttps://danyk.cz/digitrony_en.html#google_vignettevacuum-tubes.com/nixie-tubes-guide/?srsltid=AfmBOopvoS3ad7ERbK-Vuf52pvYzumC5spBqgWVovbcf209Df3EEfA7hmedium.com/@Canyon_Geisleman/an-anthem-to-the-nixie-tube-44240c9aaca4http://www.jb-electronics.de/html/elektronik/nixies/n_nixie_geschichte.htm?lang=enswissnixie.com/tubes/B4032industrialalchemy.org/tubepage.php?item=17&user=0tube-tester.com/sites/nixie/different/cathode poisoning/cathode-poisoning.htmpanaplex.co.uk
SHORT: Vis-o-Glow Lightning Arrester Our Own Devices 2025-05-21 | Introduced by the L.S. Brach Manufacturing Corporation of Newark, New Jersey in the mid-1920s, the Vis-o-Glow was one of dozens of different devices designed to protect radio antennas and other sensitive electronic devices from lightning strikes and other overvoltage surges. The integrated neon discharge tube not only reduced the arrester's breakdown voltage, but also gave the user a visual indication of lightning strikes. SOURCESworthpoint.com/worthopedia/radio-antenna-lightning-arrester-vis-1853687004worthpoint.com/worthopedia/instant-collection-antique-radio-1864542137laurelleaffarm.com/products/vintage-VisOGlow-lightning-arrester-early-electric-radio-telephone-protector-Laurel-Leaf-Farm-item-no-nt723151.htmnia.org/general/arresters/arresters.htmhttp://www.arresterworks.com/ArresterFacts_files/ArresterFacts 009 What is an Arrester R3.pdfpatents.google.com/patent/US1752660A/en?inventor=Leon+S+Brach&page=4patents.google.com/patent/US1173165A/en?inventor=Leon+S+Brach&page=3patents.google.com/patent/US1947967A/en?inventor=Leon+S+Brach&page=3patents.google.com/patent/US1004235A/en?inventor=Leon+S+Brach&page=3patents.google.com/patent/US1589583A/en?inventor=Leon+S+Brach&page=3patents.google.com/patent/US1754709A/en?inventor=Leon+S+Brach&page=2patents.google.com/patent/US1582330A/en?inventor=Leon+S+Brach&page=1patents.google.com/patent/US1458611A/en?inventor=Leon+S+Brach&page=1nia.org/publications/old_familiar_strains/OFS 1995_10 vol 2 no 4-5.pdfradiomuseum.org/dsp_hersteller_detail.cfm?company_id=12736mycompanies.fandom.com/wiki/L._S._Brach_Manufacturing_Corporation
