The Hamann Manus F mechanical calculator
Channel: Jaap Scherphuis
Date: 2019-07-28

The Hamann Manus F calculator looks like a pinwheel machine, but it actually uses a different mechanism. It's most unusual feature is that it does automatic division.

For more information on the Hamann Manus and the other calculators in my collection, visit my site:
https://www.jaapsch.net/mechcalc/

0:00 Introduction
0:15 Addition
1:18 Subtraction
2:10 Clearing
2:29 Multiplication
3:42 Division
7:30 History
9:20 Outro