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 calculator with stylus and pencil

Dark Roasted Blend: Awesome Vintage Calculators

Addiator, Calculating Machine ; Addiator Gesellschaft; 1920-1930; MT2012.141

Addiator Slide Adder (Troncet) A Collection of Mechanical Calculators

Meeting of six calculators - Addiator desktop calculator…

Vintage Addiator Mechanical Calculator, in Hackney, London

Addiator Duplex Pocket Calculator Gold Plated Aluminum

Addiator calculator; Addiator Gessllschaft; 1920's - 1930's; r17457

Addiator' calculating machine, c 1924.

Powerhouse Collection - Addiator calculator

John Wolff's Web Museum - Slide Adding Machines

Addiators A Collection of Mechanical Calculators

Addiator Duplex Adding And Subtracting Machine [ 12.6cm METAL CALCULATOR, BLACK & GILT PAINTED FRONT WITH YELLOW LETTERING + LOGO ON TOP, NUMEROUS HOLES & SLIDE SLITS TO MOVE INDICATORS, RESET LEVER +

John Wolff's Web Museum - Slide Adding Machines

John Wolff's Web Museum - Slide Adding Machines