Uploaded April 2021 | Updated September 2026, 10 hours ago
The Hamann Manus E is a mechanical calculator made between 1948 and 1953. It looks like a pinwheel calculator, and is used in much the same way except that subtraction is done by flipping a switch rather than turning the crank in the opposite direction. It can do automatic division.
Here is a previous video of the successor, the Hamann Manus F:
youtu.be/dApNR6drlY4
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
0:35 Addition
0:57 Clearing the input
1:40 Clearing the register and counter
2:05 Multiplication
3:10 Subtraction
4:17 Division
6:30 Outro
The Hamann Manus E is a mechanical calculator made between 1948 and 1953. It looks like a pinwheel calculator, and is used in much the same way except that subtraction is done by flipping a switch rather than turning the crank in the opposite direction. It can do automatic division.
Here is a previous video of the successor, the Hamann Manus F:
youtu.be/dApNR6drlY4
For more information on this and other calculators in my collection, please visit my website:
jaapsch.net/mechcalc
0:00 Introduction, History
0:35 Addition
0:57 Clearing the input
1:40 Clearing the register and counter
2:05 Multiplication
3:10 Subtraction
4:17 Division
6:30 Outro
