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Pendulum Quadrant
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Pendulum Quadrant

1857 · overall: 2 1/2 in x 13 3/4 in x 11 in; 6.35 cm x 34.925 cm x 27.94 cm

From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.

About this work

Patent model for Robert Norris and Frederick Peters, “Pendulum Quadrant,” U.S. Patent #18701 (1857). Both men lived in New York City. Their instrument was designed for taking latitudes at sea.

National Museum of American History’s own description
Subjects
PatentsQuadrantModels
Credit linePendulum Quadrant. 1857. National Museum of American History. CC0.
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