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 Duplex Pocket Calculator Gold Plated Aluminum

Vintage Arithma Addiator with Stylus ~ Made in Germany!!!!!!

Addiator Slide Adder (Troncet) A Collection of Mechanical Calculators

Mechanical Calculator Addiator PIP no supports by Michael F, Download free STL model

Addiator Calculator - UK

VINTAGE ADDIATOR DUPLEX Mechanical Calculator with Leather Case £19.75 - PicClick UK

John Wolff's Web Museum - Slide Adding Machines

Mechanical Calculator - Singapore

Addiator Arithma Mechanical Calculator

Shady Characters – Page 2 – The secret life of punctuation

Powerhouse Collection - Addiator Duplex calculator