Combined eidograph and geometric drawing instrumen

Made:
1858-1880 in Philadelphia

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

Combined eidograph and geometric drawing instrument patented 1858 by William Wythes and made by Queen & Co., Philadelphia, in original case (worn)

Details

Category:
Mathematics
Object Number:
1990-415
type:
scaling drawing instruments
credit:
Peter Delehar