Cenco Student 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 315739. This instrument is marked with the "Cenco" trademark of the Central Scientific Company of Chicago, founded in 1900. They manufactured and sold educational scientific apparatus. Their 1936 catalog describes this item as "Spherometer, Student Form" and lists experiments in several popular physics textbooks that can be performed with this instrument. This instrument includes a demonstration optical flat and a large double-convex lens. This particular setup was probably used by students to replicate the Newton's Rings experiment. This spherometer is small (3.5 inches in height) and has both a vertical scale and a horizontal scale on the disc. This spherometer sold for $4.50 in 1941. This spherometer was originally owned by Columbia University.
Central Scientific Company, Catalog (1941): 1014.
Location
Currently not on view
date made
ca 1906-1950
maker
Central Scientific Company
place made
United States: Illinois, Chicago
Physical Description
metal (instrument material)
glass (flat material)
Measurements
overall: 9.3 cm x 7 cm x 6.5 cm; 3 21/32 in x 2 3/4 in x 2 9/16 in
overall parts in box: 3 5/8 in x 6 1/2 in x 5 1/4 in; 9.2075 cm x 16.51 cm x 13.335 cm
ID Number
2001.0162.04
catalog number
2001.0162.04
accession number
2001.0162
Credit Line
Gift of the Department of Physics, Columbia University
subject
Mathematics
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Spherometers
Data Source
National Museum of American History, Kenneth E. Behring Center

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