Montgomery Cunningham Meigs

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Grading transit
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Courtesy of National Museum of American History, Smithsonian Institution


Title: 

Grading transit

Date: 1854



Capt. Montgomery C. Meigs used this grading transit, a surveying instrument, in his work on the Washington Aqueduct in the mid-1850s. It was made for him in 1854 by a prominent Washington instrument maker, William Wurdemann.


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