Grass Model 7E Polygraph - $100 (Clayton)

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condition: excellent

make / manufacturer: Grass

model name / number: 7E Polygraph

size / dimensions: See post

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Psychological & Brain Sciences at WashU no longer uses this device – it needs a new home. The larger unit is on casters, the smaller unit will fit on a dolly. Local pick-up only – we have a loading dock to lift it up into a truck or van. $100 OBO.

Unit 1 – Serial #: 9A11U1
Unit 2 – Serial #: 02Y42K

Unit 1 – 25” Wide X 5’9” Tall X 30” Deep
Unit 2 – 21” Wide X 34” Tall X 12” Deep

Comes with instruction manuals, various cables, and cords.

post id: 7980587799

posted: 2026-10-09 09:26

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Grass Model 7E Polygraph - electronics - by owner - sale - craigslist

Psychological & Brain Sciences at WashU no longer uses this device – it needs a new home. The larger unit is on casters, the smaller unit will fit on a dolly. Local pick-up only – we have a...