polariscope
date: label: date made
content: late 19th century
notes: label: Description
content: 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.
label: Description
content: Ref: Queen & Co., Inc., <i>Catalogue of Physical Apparatus</i> (Philadelphia, 1898), pp. 8-90.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: U.S. Military Academy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315429
label: catalog number
content: 315429
label: accession number
content: 217544
objectType: label: Object Name
content: polariscope
physicalDescription: label: Measurements
content: 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