Slide rule tie clip

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  • Details
  • Description
Date Introduced
1950 ca.
Photographer
Richards, Mark
Dimensions
overall: 3/4 in x 2 3/4 in x 1/2 in.
Manufacturer
J.A. Campbell
Copyright Owner
© Mark Richards
Keywords
Jewelry; Oughtred, William; Analog; Hand calculation
Object ID
102672919

A popular retirement gift for engineers in the mid-1900s.