You are bidding on a Wonderful Condition: HARVARD GRASS® 7DA POLYGRAPH LIE DETECTOR MACHINE as can be seen in the pictures.
INCLUDES MANY EXTRA BONUS ACCESSORIES INCLUDING MANUALS AS CAN ALSO BE SEEN IN THE PICTURES!
IMPORTANT: THIS IS A RARE VINTAGE IRREPLACEABLE UNIT AND THUS IS BEING SOLD UNDER AN AS IS NO RETURN SALE, PLEASE DO MAKE SURE TO CHECK ALL PICTURES AND ASK ANY QUESTIONS BEFORE COMMITTING TO BUY IT!!!
This HARVARD GRASS® 7DA POLYGRAPH LIE DETECTOR MACHINE WAS DECOMISSIONED WHILE WORKING PERFECTLY AT A FEDERAL UNIVERSITY!!!
FEEL FREE TO READ MANUFACTURER's TECHNICAL DATA ON THIS GRASS® POLYGRAPH BY GOOGLING: //collection.maas.museum/object/386233
This Grass Instruments 7DA Polygraph DC Driver Amplifier & RPS 7C 8 Regulated Power Supply are in good condition and were removed from a working environment.
This unit came from a Federal University Lab that had surplus inventory after upgrading equipment.
We urge customers to view all photos as they show overall condition, included accessories, and useful information. Please feel free to contact us with any questions.
Grass Instrument Polygraph 7DA Polygraph DC Driver Amplifier & RPS 7C 8 Regulated Power Supply
Grass Eeg & Polygraph Data Recording System, Model RPS 7 C 8
The Grass 7D Polygraph machine was used by researchers in the 1980s and 90s for research into a learning process called Associative Learning, in which discrete ideas and precepts become linked to one another and associations are formed between stimuli and reactions.
Record skin conductance response (SCR), evoked cardiac response, reaction times (RT), respiratory response, and orienting response.
Polygraph machines have become part of popular culture, particularly through North American television shows and movies about crime and the legal system.
The lie detector machine, as it is commonly referred to in popular culture, is not commonly used in other countries' legal system.
There is yet to be a ruling on the admissibility of evidence from polygraphs, and it is unlikely that their use will be held admissible in Australian criminal courts.
Nevertheless, there are private companies in Australia providing polygraph services for use in lie detection. Australian tabloid style current affairs television shows often engage the services of such companies, thus fortifying the polygraph's place in popular culture.
This polygraph machine was used for research at the University of Michigan's psychology department, and many published articles resulted from the machine's use.
The machine is redundant, though it is still operable.
Polygraph machine, Grass 7D, metal / plastic / electronic components / paper, made by Harvard Grass Instrument Company, Quincy, Massachusetts, United States of America, 1984.
The unit is mounted on a trolley. The lower part of the trolley has a recess for storing the continuous-feed paper used for recording data.
The middle section of the unit houses the printing apparatus. Above this is the control interface, consisting of four panels of control dials and switches.
Approximate Dimensions
Height: 67 inches (1700 mm)
Width: 27 inches (680 mm)
Depth: 31.4 inches (800 mm)
Harvard Grass 7D Polygraph machine, Museum of Applied Arts & Sciences
FEEL FREE TO READ MANUFACTURER's TECHNICAL DATA ON THIS GRASS® POLYGRAPH BY GOOGLING: //collection.maas.museum/object/386233
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Thank you so much for checking our listing out, for the past 17 years we have strived to offer the best customer satisfaction ever, I guess our feedback rating proves that, what better than that can we show!!!
COSMETIC NOTES: GOOD cosmetic condition as can be seen in the pictures.
Stock # 211208
