The PU scope (ПУ, прицел укороченный, 'Scope short-cut' in comparison to PE scope) is a sniper scope of Soviet manufacture, widely used on the Mosin–Nagant and SVT-40. The scope was fixed at 3.5 power magnification. The reticle could be adjusted vertically for range, from 0 to 1300 meters. Horizontal adjustments for windage were also provided.
References
PU scope Wikipedia(Text) CC BY-SA