The Högfors Adding Machine @jaapsch2

Jaap Scherphuis | The Högfors Adding Machine @jaapsch2 | Uploaded September 2020 | Updated October 2024, 2 hours ago.
The Högfors Adding Machine is a simple adding machine made in Högfors, a tiny Swedish village near Norberg, 140km North West of Stockholm.

For more information on this machine and others in my collection, visit my website:
jaapsch.net/mechcalc

0:00 Introduction, History
1:36 Addition
2:18 Clearing
2:57 Further history
3:24 Outro

The Pocket Counter, a small adding machine

$The Quixsum Fractional Adding Machine The Quixsum Fractional Adding Machine is an adding machine for lengths in feet, inches, and fractions of an inch. It was made in 1924. It is very rare as only about 600 were ever made. Stephen Freeborn has a nice video of it too: https://youtu.be/7f4Q-YwIhKw For more information about this and other machines in my collection, please visit my website: https://www.jaapsch.net/mechcalc/ 0:00 Introduction 0:12 History 1:19 Adding 4:04 Clearing 5:02 Opening case 5:02 Opening case 5:33 Mechanism 6:57 Rarity 7:57 Outro$

The mechanism of the Add-em toy adding machine