Addiators A Collection of Mechanical Calculators

Addiators, or troncets, are simple adding or adding/subtracting devices which operate via a system of slides usually operated with a stylus. They are also commonly known as slide adders. Addiators are strictly speaking just one of many brands of slide adder, but the term "Addiator" has been adopted as the generic term for all such…

Addiator Arithma Mechanical Calculator

Mechanical calculator - Wikiwand

HD wallpaper: addiator, mechanical, calculator, subtract, addition, subtraction

Pocket Mechanical Calculator - Addiator/Addifix

Addiator, Calculator ; Addiator Gesellschaft; 1940-1950; WY.1991.112

Historical Treasure: Pocket-sized adding machine, Valley Life

Addiator Duplex Pocket Calculator Gold Plated Aluminum

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Vintage Addiator Duplex, mid century mechanical calculator from Germany