Wye Level

Wye Level

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This is a standard architect's level with a relatively short telescope and a small graduated horizontal circle. Gurley began making levels of this sort in 1874 and was still making them fifty years later. According to company hyperbole, this level was “extensively used by intelligent and enterprising architects, builders and millwrights on construction and building work, as well as by engineers and surveyors in the grading of streets, sewers, irrigation ditches and drains.” This example is marked "W. &. L. E. GURLEY TROY N.Y." The lack of serial number indicates that it was made before 1908.
Ref: W. & L. E. Gurley, Gurley Engineering Instruments (Troy, N.Y., 1920), pp. 68-69.
Currently not on view
Object Name
wye level
W. & L. E. Gurley
place made
United States: New York, Troy
overall: 6 7/8 in x 4 7/8 in x 12 3/8 in; 17.4625 cm x 12.3825 cm x 31.4325 cm
overall: 6 7/8 in x 4 7/8 in x 12 1/2 in; 17.4625 cm x 12.3825 cm x 31.75 cm
ID Number
catalog number
accession number
Credit Line
UOP Inc.
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Medicine and Science: Physical Sciences
Surveying and Geodesy
Measuring & Mapping
Data Source
National Museum of American History
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