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Physical Sciences Collection - Surveying and Geodesy

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Geodetic Transit - click to enlarge

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Geodetic Transit

Catalogue number:
PH*330223

Inscriptions:
"Richard Patten & Son Washington City, D.C."

Dimensions:
telescope 2.25 inches aperture and 28 inches focus

Discussion:

This transit dates from the period 1842-1853 when Richard Patten & Son were in business in Washington, D.C. It has a conical horizontal axis with center cube. A graduated vertical circle is attached to one end of the axis. The two conical brass pillars rest on a circular iron base with an open framework. The box is marked "U.S. Topographical Bureau. Transit No 1,2". The United States Army established the Topographical Bureau in 1838.

Further Information:

Geodetic Transit
Patten

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