Interesting portable 'Ambassador' model portable polygraph machine built by the Lafayette Instrument Company, housed in its original 21˝ x 13.5˝ x 6.5˝ metal suitcase. The lid opens to reveal the five-channel, all mechanical polygraph with three modules marked "Cardio | Aux. | Pneumo" and one marked "Cardio | Aux. | Pneumo | GSR." A partial "U.S. Secret Servic[e]" tag is affixed at the top, and a calibrator is built into the top of the case. Untested and in fine cosmetic condition, with some wear to the case. Accompanied by assorted cables affiliated with the polygraph device, and a spare spool of polygraph chart paper. An interesting visual piece that evokes the spy games (tradecraft), espionage tactics of the Cold War, and law enforcement 'lie detection.'
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