The Standard Desk Calcumeter @jaapsch2

Uploaded March 2017 | Updated September 2026, 41 minutes ago

The Standard Desk Calcumeter is a simple but beautifully made adding machine from 1903-1914.

Find out more at my website:
jaapsch.net/mechcalc/calcumeter.htm

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