Electro Tech ETS 232 Faraday Cup Nanocoulomb Meter Charge Measurement 8.5" ID

Electro Tech ETS 232 Faraday Cup for Nanocoulomb Meter Charge Measurement 8.5" ID

Used, see photos. Has some small imperfections. Works fine.

See last photo for measurements.

Inner diameter of chamber is a little over 8.5", inner height is 6"