- A spherometer is a device used primarily for measuring the curvature of objects such as lenses and curved mirrors. For further information about spherometers, see object MA.315739.
- In 1845 William Gurley (1821-1887) became a partner to J.H. Phelps in his instrument shop. In 1851 William's brother Lewis joined the firm, and in 1852 they bought out Phelps and founded Gurley Precision Instruments using the mark “W. & L.E. Gurley in Troy N.Y.” This Gurley device was originally owned by the Department of Physics, Columbia University, and was donated to the Smithsonian in 1975.
- Sources: http://www.gurley.com/
- W. & L.E. Gurley, Catalog (1910): 94-96.
- Currently not on view
- Object Name
- date made
- ca 1910
- W. & L. E. Gurley
- place made
- United States: New York, Troy
- Physical Description
- metal (overall material)
- overall: 5 5/8 in x 4 1/8 in x 4 1/4 in; 14.2875 cm x 10.4775 cm x 10.795 cm
- overall: 4 1/2 in x 4 3/8 in x 4 1/4 in; 11.43 cm x 11.1125 cm x 10.795 cm
- ID Number
- catalog number
- accession number
- Credit Line
- Department of Physics, Columbia University
- Data Source
- National Museum of American History
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