4 Free Images of Circumferentors

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Compass by Edmund Draper, Philadelphia, used in Northwest Territories surveys, 1833-1853 - Wisconsin Historical Museum - DSC03290
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Surveyor's vernier compass, 1846-1854, made by Levi Colton, New York City - National Museum of American History - DSC06199
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Surveying compass, Concord Museum - Concord, MA - DSC05828
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Surveyor's compass by David Rittenhouse, believed to be given to George Washington in 1782 - National Museum of American History - DSC00136
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