Pocket Mechanical Calculator - Addiator/Addifix
8:03
Mechanical calculator in action
24:27
1920s Monroe Mechanical Calculator
12:31
Réparation d'une calculatrice Commodore
8:39
The iPhone of Slide Rules - Numberphile
9:20
LGR Tech Tales - The Pocket Calculator Wars
15:08
Magic Brain: Last Gasp of the Mechanical Calculator
11:04
Manky old calculators.
4:49