Object No.
2008/184/1Object Statement
Polygraph machine, Grass 7D, metal / plastic / electronic components / paper, made by Grass Instrument Company, Quincy, Massachusetts, United States of America, 1984, used by Macquarie University, Sydney, New South Wales, Australia, 1984-1999Physical Description
Polygraph machine, Grass 7D, metal / plastic / electronic components / paper, made by Grass Instrument Company, Quincy, Massachusetts, United States of America, 1984, used by Macquarie University, Sydney, New South Wales, Australia, 1984-1999
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 six panels of control dials and switches. The second control panel features the inputs for the skin conductance meter and electrodes which are used to measure responses.