Practical lie detector/polygraph/seismograph/chart recorder

This is a working chart recorder that comes with a wired remote box with 3 pressure sensitive pads. Tapping or applying pressure to the pads causes the pens to twitch in unison. Harder tapping produces more dramatic pen movement which can therefore be useful in any suspense building scene - or bigger lies, earthquake or whatever. Plenty of visual detail in the top control panel with plenty of knobs, switches & coloured lamps.

Prop ID: 1971