Magic Brain Calculator - A vintage mechanical addiator type

Mechanical Addiator type calculator in its original packaging

What are the things people discovered accidentally at their homes? - Quora

Category:Mechanical calculators - Wikimedia Commons

Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator Calculator Unpunched NOS

Vintage Chadwick Magic Brain Calculator. Made in Japan. Mid century modern., This item is used and has visible scratches and signs of usage., I have

Vintage Chadwick Magic Brain Calculator. Made in Japan Mid century modern.

Addiator

Notched Band Adders Smithsonian Institution

Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator Calculator Unpunched NOS

Sterling Slide Adders

Dark Roasted Blend: Awesome Vintage Calculators

Addiator' type calculators