Circular slide rule

Prev
Next
Image Zoom
  • Details
  • Description
Date Introduced
1955 ca.
Photographer
Richards, Mark
Dimensions
1/4 x 3 1/2 x 3 1/4 in.
Manufacturer
Pickett
Credit Line
Courtesy Gwen and Gordon Bell
Copyright Owner
© Mark Richards
Location
Japan
Keywords
Oughtred, William; Analog; Hand calculation
Object ID
B1657.01

Circular slide rules eliminated the “off the end” problem because the scales wrapped around continuously.