Addiators A Collection of Mechanical Calculators
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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
Addiator, Calculator ; Addiator Gesellschaft; 1940-1950; WY.1991.112
Vintage Arithma Addiator with Stylus ~ Made in Germany!!!!!!
File:Modern Addiator.jpg - Wikipedia
1950's ADDIATOR Supra German Handheld Mechanical Calculator, Stylus Operated Adding and Subtracting Machine, Vintage Desk Top Calculator.
Addiator calculator; Addiator Gessllschaft; 1920's - 1930's; r17457
12 mechanical calculators subtract to negative result
Shady Characters – Page 2 – The secret life of punctuation
Vintage Addiator Duplex, mid century mechanical calculator from Germany
