Golden Gem adding machine @jaapsch2

Uploaded May 2017 | Updated September 2026, 2 hours ago

Here I show a Golden Gem chain adder from 1912.

See my collection of mechanical calculators on my site:
jaapsch.net/mechcalc

The mechanism of the Archimedes Model D mechanical calculator

The Technidyne Micro-Tally adding machine

The Add-O-Matic adding machine (1947-1949)

The Pocket Counter, a small adding machine

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