The Multical mechanical calculator
Channel: Jaap Scherphuis
Date: 26/04/2021

The Multical, also known as the Multator, is a mechanical calculator with an ingenious design. It uses a toothed segment mechanism that can be much more easily manufactured than a pinwheel mechanism, and many clever simplifications without significant reduction in functionality. It was made in West Germany between 1956 and 1966.

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

0:00 Introduction, History
1:50 Addition
2:39 Register and counter
3:31 Shifting the carriage
3:44 Subtraction
5:14 Back transfer
6:05 Versions
6:44 Outro