Polygraph

Polygraph

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Description
One inscription on this polygraph reads “REACTION / CENTER / B & W LIE DETECTOR / ELECTRONIC PSYCHOMETER / Manufactured by B & W Associates / SOLE DISTRIBUTORS: SIRCHIE FINGER PRINT LABORATORIES / Philadelphia 7, Pa, USA.” Another reads “B & W ASSOCIATES / MICHIGAN CITY, INDIANA, USA / U.S. PAT. NO. 2,535,249 / SENSITIVITY / ELECTRODES / MICRO-CENTER / CENTER / VOLTS 115 / AMPS 3 / FREQ 60 / MODEL 740 / SERIAL 7451.”
Ref: Paul L. Wilhelm and Frank Donald Burns, “Electric Psychometer,” U.S. Patent 2,535,249 (Dec. 26, 1950).
Location
Currently not on view
Object Name
Polygraph
Other Terms
Polygraph; Lie Detector; Medicine
date made
ca 1950
maker
B & W Associates
Physical Description
wood (overall material)
metal (overall material)
plastic (overall material)
Measurements
overall: 27 cm x 31 cm x 19.1 cm; 10 5/8 in x 12 3/16 in x 7 1/2 in
ID Number
MG.321642.04
catalog number
321642.04
accession number
321642
model number
740
serial number
7451
patent number
2535249
Credit Line
American Polygraph Association
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History
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