PFM
From Night Vision Wiki
The PFM is a night vision device of Soviet origin meant to help in the use of artillery aiming circles. . The kit includes some pods similar to those on PNW-2, using a tube which has a reticle similar to the one on the NSP-2, a reticle illumination unit, a protractor utilizing Soviet mils and spare bulbs for the aforementioned unit. Variants of this device were also produced with German labeling for the NVA. The device comes in a large metal box, with the individual components listed on a piece of paper on the lid of the box itself. A high voltage converter box with a mount for the individual cable pods is also supplied. How this converter differs from others as the ones on the PNW-2 is unclear. The transformer is powered by a 12v input