Wye Level

Wye Level

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Although the Gurley firm did not begin using serial numbers until 1908, its level makers began stamping a serial number on the bottom of each baseplate in 1900. This level is stamped 2478, and is marked "W. & L. E. GURLEY, TROY, N.Y." Company records reveal that it is one off four identical levels that Gurley made for New York University in 1906. New, with tripod, it cost $110. The Bronx Community College, which had taken possession of the Bronx campus of New York University, donated it to the Smithsonian.
Ref: W. & L. E. Gurley, Manual of the Principal Instruments used in American Engineering and Surveying (Troy, N.Y. 1905), pp. 152–166.
Currently not on view
Object Name
wye level
W. & L. E. Gurley
place made
United States: New York, Troy
telescope: 20 in; 50.8 cm
overall: 9 5/8 in x 23 in x 5 7/8 in; 24.4475 cm x 58.42 cm x 14.9225 cm
ID Number
accession number
catalog number
Credit Line
New York University
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Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History
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