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' calculating machine, c 1924.

Addiator Arithma Mechanical Calculator

Powerhouse Collection - Addiator Duplex calculator

Addiators

Vintage Arithmetic ruler Calculator Mechanical Slide Addiator 1960s USSR.

Vintage Arithmetic ruler Calculator Mechanical Slide Addiator 1960s USSR.

Addiator - Mechanical Calculators

John Wolff's Web Museum - Slide Adding Machines

Print in Place Mechanical Calculator (Addiator) With Combined Addition and Subtraction : 8 Steps - Instructables

Addiator Duplex Addition Subtraction Mechanical Slide Calculator - UK

HD wallpaper: addiator, mechanical, calculator, subtract, addition, subtraction

Powerhouse Collection - Addmaster calculator

Addiator Duplex Pocket Calculator Gold Plated Aluminum

Mechanical calculator - Wikipedia