Thales KA adding machine
Channel: Jaap Scherphuis
Date: 18/11/2017

The Thales KA is an adding machine with a rather unique mechanism. It was made in Germany from 1953 to 1963, and this one is probably from about 1960.

For more information on this an other mechanical calculators in my collection, visit my website:
https://www.jaapsch.net/mechcalc/

0:00 Introduction, history
0:50 Keyboard
1:12 Addition
2:15 Clearing
2:41 Multiplication
3:14 Subtraction
4:08 Early variants
4:48 Outro