English-Finnish translations for polygraph

A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies
A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs
A collection of different works, either by one or several authors
To administer a polygraph test to

The FBI polygraphed the suspect but learned nothing because they already knew he was lying

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