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.

Curta Mechanical Calculator, a small, hand-cranked mechanical calculator…

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

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

(Video) - Mechanical Calculator Dividing by Zero - WorkLAD - Banter, Funny Pics, Viral Videos

Old Calculator

Mechanical Calculator, Old Calculator

Adding Machines.  Can you imagine running a tape on every loan account every month and not making a mistake. The balance on the account sheets & the balance on the books had to match. If your fingers didn't hit the right keys, then you started over again. Comes from experience.

Adding machine (calculator) - learned to operate this in my office machines class in high school.

FELIKS mechanical calculator

FELIKS mechanical calculator

inside a mechanical calculator

The Surprising Complexity of Old-School Calculators

The Inner Workings of Antique Calculators Dramatically Photographed by Kevin Twomey vintage technology machines

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!

The Type 1 Curta: What engineers used before HP came along. The machinery is akin to a high-end watch - amazing tool.

FELIKS mechanical calculator

FELIKS mechanical calculator

The Beautiful Guts of Classic Mechanical Calculators

The Beautiful Guts of Classic Mechanical Calculators

Photo Credit, Mechanical Calculator, Technology Gadgets, Photo Series, Kevin O'leary, Old Calculator, Tv Sets, Photography, Gadget News

FELIKS mechanical calculator

FELIKS mechanical calculator

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