Gurley Spherometer

Description
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.
Location
Currently not on view
Object Name
spherometer
date made
ca 1910
maker
W. & L. E. Gurley
Physical Description
metal (overall material)
Measurements
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
place made
United States: New York, Troy
ID Number
PH*335217
catalog number
335217
accession number
315390
subject
Science & Mathematics
Spherometers
Mathematics
See more items in
Medicine and Science: Physical Sciences
Spherometers
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Department of Physics, Columbia University

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Image CAPTCHA
Enter the characters shown in the image.