The Sirius adder  @jaapsch2
The Sirius adder  @jaapsch2
Jaap Scherphuis | The Sirius adder @jaapsch2 | Uploaded October 2021 | Updated October 2024, 2 minutes ago.
The Sirius adder was made by Master, who also made the Master and the Business adders. This one has attachments for use in multiplication and even division, but these are completely unusable. The box contains not only instruction manuals, but also various ads, including rather oddly an ad for the Sirius itself.

Video of the Business and Master adders:
youtu.be/m3toHgmCZuk

For more information on this and other machines in my collection, please visit my website:
jaapsch.net/mechcalc

0:00 Introduction
0:53 Addition
1:33 Carry operation
2:14 Clearing
2:39 Scriptor attachments
6:52 Testimonials
7:22 Sirius ad
7:45 Guarantee
8:24 Scriptor instructions
8:52 Special offer
9:32 Instruction booklets
10:54 Ad for Electric Master
11:35 Receipt
12:04 Packing up
13:14 Outro
The Sirius adderBeaver adding machineThe proportional lever mechanism of the Mercedes-Euklid calculatorsThe Sumlock mechanical calculator, and some advanced calculation techniques.The STOP button of the Marchant ACT-10M calculatorThe Sterling Dial-A-Matic adding machine, 6-dial modelThe O.J. AdderThe mechanism of the EOS mechanical calculatorThe Schubert DRV mechanical calculatorSeidel & Naumann Adding MachineCoin Magic - Coin VanishMy puzzle collection (Long video)

The Sirius adder @jaapsch2

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