Addiators A Collection of Mechanical Calculators
4.7 (547) · $ 17.50 · 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…
File:Modern Addiator.jpg - Wikipedia
Mechanical calculator - Wikipedia
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What is this brand? This is an Addiator-style pocket mechanical calculator I just got, and I'm interested to know about how old it might be, but the only identifying marking is this
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Addiator - Mechanical Calculators
File:Hand-held calculators, including Castecc Addiator and MBC Pocket Calculators - Ridai Museum of Modern Science, Tokyo - DSC07521.JPG - Wikimedia Commons
Addiator - Mechanical Calculators
Addiators A Collection of Mechanical Calculators
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