Mechanical calculator Hamann 300 divides 1 by 3
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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.
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