Mechanical calculator Hamann 300 divides 1 by 3
0:32
YouTubeA. Dolgicers
Mechanical calculator Hamann 300 divides 1 by 3
The 1954 machine Hamann 300 (so called version A) - semi automatic " ratchet" calculator. Machines like this one used coupling angle between rotating shaft and double sided gear to encode numbers being bit faster and less noisy comparing to pin wheel designs.
926.1K viewsJun 22, 2022
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