Otis King cylindrical slide rule

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  • Details
  • Description
Date Introduced
1969
Photographer
Richards, Mark
Dimensions
overall: 1.25 x 7.5 x 1 1/4 in.
Manufacturer
Otis King
Credit Line
Courtesy Gwen and Gordon Bell
Copyright Owner
© Mark Richards
Location
United Kingdom
Keywords
Oughtred, William; Analog; Hand calculation
Object ID
B311.84
Cost
$10-25

This 60-inch rule could be closed and slipped in a pocket. The “Model K” had just two scales and could only multiply and divide.