
In this Instructable, we will construct a mechanical calculator called the Curta. I started this project because shortly after building my first 3D Printer I found a Youtube video describing the Curta and how it works and got fascinated with the device.When I realized how expensive they are today (t...
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MarcusW44Continue Reading »from Instructables: exploring - featured http://ift.tt/2w7TCMF
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