Adding Machine

Made:
1843 in France

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Roth's calculating machine, invented and patented by D.J. Wertheimber in 1843, English currency version,

Didier Roth returned to the basic design of Blaise Pascal for this simple stylus-operated adding machine. It did not receive much interest. This particular example is modified to add English currency.

Details

Category:
Mathematics
Object Number:
1917-13
Materials:
bone, brass (copper, zinc alloy) and mahogany (wood)
type:
adding machines
credit:
Court, Thomas Henry