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…
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ANTIQUE GERMAN MECHANICAL CALCULATOR SLIDE ADDER ADDIATOR/SUBTRACTOR PRODUX
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How to use an Addiator mechanical calculator
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John Wolff's Web Museum - Slide Adding Machines
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John Wolff's Web Museum - Slide Adding Machines
File:Hand-held calculators, including Castecc Addiator and MBC Pocket Calculators - Ridai Museum of Modern Science, Tokyo - DSC07521.JPG - Wikimedia Commons
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Addiators A Collection of Mechanical Calculators
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Pocket Mechanical Calculator - Addiator/Addifix
![](https://upload.wikimedia.org/wikipedia/commons/a/a2/Addiator.jpg)
Slide calculator - Wikipedia
Addiator Duplex Pocket Calculator Gold Plated Aluminum
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File:Modern Addiator.jpg - Wikipedia
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