The Add-A-Mite Pocket Calculator @jaapsch2

Uploaded March 2021 | Updated September 2026, 1 hour ago

The Add-A-Mite is a simple dial shopping adder from about 1951. It was made by Monogram of California, San Francisco.

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

0:00 Introduction
0:35 Addition
1:55 Sahn K. Lowe
3:37 Monogram
4:37 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