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TypeII-1 Curta. The Curta is a very cool machine, designed by Curt Herzstark while incarcerated in a Nazi concentration camp! This amazing little machine can add, subtract, divide, multiply, fit in your pocket, grind pepper, predict the weather, and unlike those boring electronic calculators, the Curta has ten billion moving parts!


A Vintage Mechanical Calculator Spins Wildly While Trying to Divide by Zero

A vintage Facit mechanical calculator spins wildly while it tries to divide by zero in a video posted by MultiGlizda. Dividing a number by zero gives an undefined result, so the machine is i…


Pascal's Calculator (1670). A mechanical calculator that could add and subtract, built by the philosopher Blaise Pascal in the 1670s. The system of cranks and gears is comparable in complexity to the Antikythera mechanism from 1000 years earlier.


Curta CALCOLATRICE MECCANICA Dark Roasted Blend: Stunningly Intricate: Curta Mechanical Calculator

Curta Mechanical Calculator, a small, hand-cranked mechanical calculator introduced by Curt Herzstark in 1948. It can be used to perform addition, subtraction, multiplication, division, and (with more difficulty) square roots and other operations. considered the best portable calculators available until they were displaced by electronic calculators in the 1970s.