Circular slide rule in pocket-watch format

Made:
1880-1890 in Holborn
maker:
William Ford Stanley

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

Boucher calculator, a circular slide rule in pocket-watch format, made by Stanley, Great Turnstile, London, B4363, A222083

Details

Category:
Mathematics
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
1989-655
Materials:
glass, paper and steel
type:
circular slide rule
credit:
On loan from the Wellcome Trust