Thomas Arithmometer

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  • Details
  • Description
Date Introduced
1850 ca.
Photographer
Richards, Mark
Dimensions
3 1/2 x 22 1/2 x 6 1/4 in.
Manufacturer
Thomas de Colmar, Charles
Credit Line
Loan of Gwen and Gordon Bell
Copyright Owner
© Mark Richards
Location
France
Keywords
Stepped drum; Mechanical calculation
Object ID
B214.82

This four-function calculator joined Leibniz’s stepped-drum with industrial-revolution manufacturing.