Photometer (Foot Candle Meter)

Photometer (Foot Candle Meter)

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Description
The Westinghouse Lamp Co. described this as “a light, compact, non-complicated instrument developed to measure illumination in fields where a large photometer could not be conveniently or practically used. This example came from Wabash College. The inscriptions read “No. 8792 – Illumination, foot candles or lumens per sq. ft.” and “PATENTED MARCH 11, 1919.” The “W. W. WINSHIP / 71 SUMMER ST. / BOSTON” inscription on the black leather case refers to the trunk maker who made the case.
Ref: Clayton H. Sharp, “Photometer,” U.S. Patent 1,297,260 (March 11, 1919), assigned to General Electric Company.
Westinghouse Lamp Co., Instructions for Using the Foot-Candle Meter.
Location
Currently not on view
Object Name
Photometer (Foot Candle Meter)
Measurements
overall in case: 7 1/8 in x 8 1/2 in x 2 5/8 in; 18.0975 cm x 21.59 cm x 6.6675 cm
ID Number
PH.322998
catalog number
322998
accession number
249201
Credit Line
Wabash College
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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