This kilovoltmeter is without light bulb, so need to find it to make it work, article OP6.3-0.22 (ОП6,3-0,22)

(if you ask me for it - it will be faster to find it)

Amazing C96 kilovoltmeter 0-30kV (old stock) that use light on scale instead of arrows with lot of mirrors. Video show how it works(if put light bulb, video from previous sold kilovoltmeter). Beautiful thing in use!  Maybe need calibrating.

Brief technical description for kilovoltmeter, voltmeter C96

Kilovoltmeter S96 (S 96; S-96; s96; s 96; s-96)

Kilovoltmeter C96 is an electrostatic three-limit device for measuring voltage in DC and AC circuits in a wide frequency range.

Measurement limits - 7.5kV - 15kV - 30kV.

Accuracy class - 1.5.

Frequency applicability - up to 20 MHz.