The KR33-31 is a small neon voltage stabiliser fitted with a small Ediswan screw base cap. As yet we have found no operating details for this device.
The full Type designation, makers name and logo.
The electrodes are a disc and open ring.
The thin glass tube envelope is 16 mm in diameter, and including the base cap is 55 mm tall.
Updated April 08, 2016. shape:thin.glass.tube construction:all.glass type:voltage.stabiliser base: pin: