Ashcroft averaging planimeter

Made:: 1910-1920 in Chicago and New York

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Ashcroft averaging planimeter
Science Museum Group
© The Board of Trustees of the Science Museum

Ashcroft averaging planimeter, patented 21 June 1910 by Ashcroft Manufacturing Company, Chicago and New York, in original lined case

Details

Category:: Mathematics

Object Number:: 1990-707

type:: planimeter

credit:: Auction Team Koln

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Ashcroft averaging planimeter

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