Pocket Revolution Counter, A. Saint's 1877 patent, with wooden carrying case

Pocket Revolution Counter (A.Saint's Patent) 1877

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Pocket Revolution Counter (A.Saint's Patent) 1877
Science Museum Group
© The Board of Trustees of the Science Museum

Pocket Revolution Counter, A. Saint's 1877 patent, with fabric covered wooden carrying case, plus plum-bob and three other components

Details

Category:
Motive Power
Object Number:
1879-18
Materials:
wood (unidentified), steel (metal) and brass (copper, zinc alloy)
type:
counter
credit:
Applegarth, R.