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POLYGRAPH INSTRUMENT HISTORY
Please "Click" on a link to see a photo and read a brief history on the instrument.
B & W LIE DETECTOR Model 8AC KEELER POLYGRAPH PACESETTER SERIES MODEL 6308 KEELER POLYGRAPH MODEL 6317 KEELER POLYGRAPH MODEL 6338 KEELER POLYGRAPH MODEL 302 LAFAYETTE ELECTRO-CARDIO POLYGRAPH MODEL 76056 LEE AND SONS BERKELEY PSYCHOGRAPH STOELTING DECEPTOGRAPH MODEL 22500 STOELTING MODEL 22600 EMOTIONAL STRESS MONITOR STOELTING CARDIO-PNEUMO POLYGRAPH
"MORE TO COME"
Special thanks to the Texas Department of Public Safety Polygraph Examiners Class of 1999 for the research, organization and presentation of the information contained on this page and it's links. The historic background information was obtained from numerous journals including manuals from Stoelting, Lafayette and Keeler Instrument Company. Additional information was obtained from several other investigators and a telephone interview with Cleve Baxter.
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