Monroe Calculator

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  • Details
  • Description
Date Introduced
1915 ca.
Photographer
Richards, Mark
Dimensions
6 3/4 x 18 x 13 1/4 in.
Manufacturer
Monroe Calculating Machine Company
Credit Line
Gift of Warren J. Buck and Arthur Milinowski
Copyright Owner
© Mark Richards
Location
United States
Keywords
Bay Area; Rotary calculator; Moving carriage; Monroe, Jay R.; Baldwin, Frank S.; Mechanical calculation
Object ID
X592.85

Frank Baldwin invented the moving carriage that dominated technical calculator design for decades. An architect by profession, he held patents in several unrelated fields.