Addiators A Collection of Mechanical Calculators
$ 24.00 · 4.5 (677) · In stock
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 Old calculator, Slide rule, Mechanical calculator
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