Polygraph, United Kingdom, 1960-1970
- Made:
- 1960-1970 in United States
- maker:
- Grass Instrument Company
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LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicensePolygraph, model 5D, by Grass Instrument Co
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polygraph, model 5D, by Grass Instrument Co
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Polygraph, model 5D, Grass Instrument Company, United States, 1960-1970.
Polygraphs are popularly known as ‘lie detectors’, but this was not their intended function. This polygraph recorded important information about a hospital patient which included blood pressure, temperature, heart rate and oxygen levels. It was made by Grass and Co. Machines like this can diagnose an illness, or monitor a patient’s condition during an operation. The polygraph records this information simultaneously. It saves medical professionals regularly checking the various life signs.
