William Oughtred

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Date
1644 ca.
Credit Line
Courtesy of the University of Toronto, Thomas Fisher Rare Book Library
Copyright Owner
© University of Toronto
Keywords
Oughtred, William; Analog; Hand calculation; Slide rule
Object ID
500004212

Oughtred is widely credited with inventing the slide rule in the 1620s. His initial design was for a circular slide rule, but the principles are the same.