Stoelting
Psychogalvanoscope
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| Stoelting's Psychogalvanoscope |
Manufacturered in the early 1950's, this galvanometer was
the Stoelting Company's entry instrument into the galvanometer market. It was a compact, simple, non-recording instrument
for indicating electrodermal responses.
This instrument is not in the Polygraph Museum's collection.
B & W "Lie
Detector"
Electronic Psychometer
The B & W Lie detector is a simple galvanometer manufacturered
by B & W Associates of Michigan City, Indiana and distributed by Sirchie Fingerprint Laboratories. According to their
literature, this instrument is an "electronic psychometer," having the following advantages over any other lie detector: Easy
to operate; no delicate mechanism; no lengthy training school; no clumsy graphs; no chest or arm restrictions; confortable
finger electrodes; sensitivity standizer; 95 % accuracy; rugged construction; and weighs only 15 pounds.
Donated by Terry J. Ball, polygraph examiner.
B & W
Galvanometer
Like it's older brother above, this B & W Galvanometer was touted
as a "Lie Detector." According to literature at the time, this type of instrument demonstrates nicely in the laboratory where
the emotional stimuli are artificially created and therefore mild, their indications had doubtful value in practical field
application, particularily when used alone.
When in operation, a "Deception Indicated" (DI) reading is established
when the pen moves above the 'CENTER' operational area on the meter. It uses only two fingerplates.
Donated by Terry J. Ball, polygraph examiner.
Psychogalvanometer
Model #100
This Galvanometer was manufacturered especially for Major Chris
Gugas of the U. S. M. C. Major Gugas was a criminal investigator for the U.S. M. C., a polygraph examiner, and the founder
of the National Polygraph Association. It is housed in a mohagany case.
It was donated by the Estate of Chris
Gugas.
Stoelting
Galvanometer
This galvanometer was manufacturered by the C. H. Stoelting
Company. It has two pens. One is the galvanometer. The other is a stimulus marker.
Little is know of it's use.
It was donated by Norman Matzke, King County Sheriff's Department.
Psychogalavanometer
There are no markings on this galvanometer to indicate who manufacturered
it. It has three adjustments, "Balance," "Zeroing," and "Sensitivity." It is housed in a mahogany
box measuring 10" by 8". It has two meters in the upper housing, One for "Balance," and one for "Sensitivty."
The sensitivity meter is, however, missing. This galvanomter is beleived to be one of Chris Gugas' first galvanometers.
Donated
by the Estate of Chris Gugas.
Psychogalvanometer
Metrigraph Model #86DA
This is a rather large galvanometer. Measuring 18" by 8" by 8" high,
it is a formidable instrument. It was manufactured by Thompson Metrigraph Company of New Mexico. It has two large meters on
it's face, one for "Balance" and the other for "reflex." It also has five seperate adjustment knobs for "Balance," Zeroing,"
"Sensitivity," "Relex," and a power switch. Little is know of it's use, other than the fact that it belonged to Major Chris
Gugas, USMC.
Donated by the Family and Estate of Chris Gugas.
Lafayette
Galvanometer
