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Rob Edmunds on Twitter: "The Curta is a mechanical calculator designed by the Austrian Curt Herztark. Curtas were regarded as the best portable calculators before the invention of electronic calculators in the
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Finally got a curta, little graduation present for myself : r/calculators
Wiener Curt Herzstark baute vor 75 Jahren den ersten Taschenrechner der Welt - Technik - derStandard.at › Wissenschaft
The Curta Calculator | Calculating
The Curta, a calculator that connected Liechtenstein and Vienna
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See How This Intricate, 3D Printed Mechanical Calculator Works - Make:
Curta calculator: The mechanical marvel born in a Nazi death camp
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