Sector

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  • Details
  • Description
Date Introduced
1740 ca.
Photographer
Richards, Mark
Dimensions
1 1/2 x 6 1/4 x 1/4 in.
Manufacturer
T. Heath
Credit Line
Courtesy Gwen and Gordon Bell
Copyright Owner
© Mark Richards
Location
England
Keywords
Analog; Military applications; Hand calculation; Proportional compass
Object ID
B338.85

An English-style sector as described by Edmund Gunter in 1623.