Addiator' calculating machine, c 1924. | Science Museum Group Collection
John Wolff's Web Museum - Slide Adding Machines
The Calculator Series: Arithma Addiator - YouTube
Addiator Duplex Vintage Mechanical Calculator - Very Used -Not Fully FunctioningのeBay公認海外通販|セカイモン
Addiator
Amazon.com: Home Comforts Add Addiator Subtract Calculator Mechanical-20 Inch By 30 Inch Laminated Poster With Bright Colors And Vivid Imagery-Fits Perfectly In Many Attractive Frames: Posters & Prints
File:Vintage Arithma Addiator Mechanical Handheld Calculator, Made In Germany, Variants Were Produced From 1920 - 1982, This Calculator Was A Promotional Item For Ser-Ap-Es (21295273712).jpg - Wikimedia Commons
John Wolff's Web Museum - Slide Adding Machines
Pro Calculo! Mechanical addiator - Germany Circa 1920 - 1929 : Antique Goodies | Ruby Lane