Jaap Scherphuis | The Marchant ACT-10M mechanical calculator @jaapsch2 | Uploaded February 2021 | Updated October 2024, 6 minutes ago.
The Marchant ACT-10M was made between 1942 and 1948, though mine is likely to be one of the later ones. It uses a proportional gear mechanism which was the fastest general calculation method until electronics came along. In this video I show what all its buttons and switches do.
Other related videos:
The STOP button of the Marchant ACT-10M calculator: youtu.be/oeeHAUdeQRY
Marchant ACT-10M doing division in slow motion: youtu.be/imGteh7YUGY
The Marchant XL: youtu.be/ewLT2s4THG0
For more information about this machine and other calculators in my collection, please visit my site:
jaapsch.net/mechcalc
0:00 Introduction
0:40 Addition
1:09 Subtraction
1:40 Clearing
2:22 Multiplication
4:26 Tabulation
6:05 Division
8:25 Stopping division
9:07 Reverse button
10:01 Outro
The Marchant ACT-10M was made between 1942 and 1948, though mine is likely to be one of the later ones. It uses a proportional gear mechanism which was the fastest general calculation method until electronics came along. In this video I show what all its buttons and switches do.
Other related videos:
The STOP button of the Marchant ACT-10M calculator: youtu.be/oeeHAUdeQRY
Marchant ACT-10M doing division in slow motion: youtu.be/imGteh7YUGY
The Marchant XL: youtu.be/ewLT2s4THG0
For more information about this machine and other calculators in my collection, please visit my site:
jaapsch.net/mechcalc
0:00 Introduction
0:40 Addition
1:09 Subtraction
1:40 Clearing
2:22 Multiplication
4:26 Tabulation
6:05 Division
8:25 Stopping division
9:07 Reverse button
10:01 Outro
