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My favorite portable hand-crank powered device is the Curta, a mechanical calculator. http://en.wikipedia.org/wiki/Curta http://en.wikipedia.org/wiki/Curta
by nanofortnight 12y ago
My favorite portable hand-crank powered device is the Curta, a mechanical calculator.
http://en.wikipedia.org/wiki/Curta http://en.wikipedia.org/wiki/Curta
- damoncali 12y agoI've got one. I'm dying to take it apart, but I don't dare. Amazing device.