Millionaire Calculating Machine with Stand

In 1895, Otto Steiger, a Swiss citizen residing in Munich, obtained a U.S. patent for a calculating machine that would multiply a number by a single digit directly, with only a single turn of a crank. Earlier calculating machines required considerably more effort.

John Wolff's Web Museum - Millionaire Register

Millionaire Calculator Machine Explained - Everything You Need To Know - History-Computer

John Wolff's Web Museum - Millionaire Register

Millionaire Calculator Machine Explained - Everything You Need To Know - History-Computer

Mystery Dating of the World-famous 'Millionaire' Calculating Machine Solved, blog@CACM

Millionaire Calculator Machine Explained - Everything You Need To Know - History-Computer

Computing Archives - Economics in the Rear-View Mirror

System Source Computer Museum

The Millionaire (calculator) - Wikipedia

Millionaire mechanical calculator, B161.81A

Millionaire Calculating Machine

Millionaire Calculator Machine Explained - Everything You Need To Know - History-Computer