IBM Computing Cheese Cutter [Restoration] (www.youtube.com)
from tedu to tech on 11 Aug 2023 00:05
https://azorius.net/g/tech/p/2lZj7Lz3W3D5DYV6b9-IBM-Computing-Cheese-Cutter-Restoration

Explanation and demonstration begins at 42:30.

Patent: https://patents.google.com/patent/US728181A

Diagram from the patent showing the computing levers

#retro #tech #video

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