Ashcroft averaging planimeter, patented 21 June 19

Made:
1910-1920 in New York and Chicago

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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
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
credit:
Auction Team Koln

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