Model of a bicycle crank

Made:
circa 1880
Variable radius crank for cycles, model, scale 1:?

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Variable radius crank for cycles, model, scale 1:?
Science Museum Group
© The Board of Trustees of the Science Museum

Variable radius crank for cycles, model, scale 1:?

Details

Category:
Road Transport
Object Number:
1918-220
type:
models
credit:
Mr. P.A. Newton (of Newton & Son).