Soviet Surveillance device TNPO-115

Surveillance device TNPO - 115

Devices with electrical observation windows are prismatic periscopes and designed to monitor the terrain of an object at a temperature between + 50 ^o C to - 50 ^o C. Power windows electrical heating is performed by the DC bus voltage regulator 27B through the PTC type temperature.

Device TNPO - 115 consists of two prisms placed in a metal housing. Prisms are electric heating, which improves the visibility through the instrument at low temperatures at zaindevenii fogged and the upper and lower prisms device. In poor visibility through the instrument due to the above reasons include electrical heating.

Not working, has been ripped out of vehicle many moons back and seen storage and dust ever since.
Came from real soviet armored vehicle. (BDRM-2, BTR etc)