Derck's circular gauge dial

Made:: 1920-1925 in Indianapolis

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Derck's circular gauge dial
Science Museum Group
© The Board of Trustees of the Science Museum

Derck's circular gauge dial, a ready reckoning calculator for pipes, drills and machine tools. Copyrighted by James Derck, c1925.

Details

Category:: Mathematics

Object Number:: 1998-869

Materials:: cardboard and complete

Measurements:: 2.54 x 127 mm

type:: ready reckoner (engineering)

credit:: Tesseract

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Derck's circular gauge dial

Details

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