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This fairly rugged and inexpensive instrument has a wooden frame, a horizontal plate of blackened glass for the polarizer, a brass stage to hold the object to be examined, a magnifying lens, a Nichol prism analyzer, and a ground glass screen to shut off images of distant objects. The whole fits into a wooden box (12 inches x 18 inches x 6.75 inches high). The “James W. Queen & Co. / PHILADELPHIA” inscription on the stage refers to the firm that introduced this type of instrument in the 1880s.
Ref: Queen & Co., Inc., Catalogue of Physical Apparatus (Philadelphia, 1898), pp. 8-90.
Currently not on view
Object Name
date made
late 19th century
place made
United States: Pennsylvania, Philadelphia
overall in case: 12 1/2 in x 18 1/2 in x 6 5/8 in; 31.75 cm x 46.99 cm x 16.8275 cm
ID Number
catalog number
accession number
Credit Line
U.S. Military Academy
Science & Scientific Instruments
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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