Maker Marcus Wu has built a 3D printed Curta calculator, a mechanical calculator that can make calculations with the turn of a handle. The device was originally developed by concentration camp survivor Curt Herzstark in the 1940s. Most of us grew up with electronic calculators in school. But those bulky, solar-powered devices that could be […]
Source: The 3d printers sourcefrom The 3d printers source http://ift.tt/2v6yU1D
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