This compact cylindrical handheld calculating machine has black metal sides and a plastic top and operating handle. Eight slots along the side of the cylinder hold levers that are pulled down to set ...

The mechanical marvel has an interesting history. Curt Herzstark invented it while in a Nazi concentration camp. After the war, Curta calculators were made in Liechtenstein. Production ended in the ...

If you've ever spent time thumbing through back issues of magazines like Scientific American or New Scientist, you may have seen adverts for the Curta – a strange little device that resembles a pepper ...

The Curta calculator, a small cylindrical math machine with a hand-crank on the top, was first dreamt up by Curt Herzstark in the 1930s who finished its design while imprisoned in the Buchenwald ...