Designation .....  PO 1.5-4.5(PO 1.5-4.5 S)     PO 2-6(PO 2-6 S)       PO 3-9(PO 3-9 S)
Magnification, x ..... 1.5-4.5     2-6     3-9
Linear field of view, m/100 m ..... 24.0-8.5     17.5-6.5     11.5-4.2
Eye-piece diameter, mm.....  39 ...... 39.....  39
Objective lens diameter, mm .....  20      27      40
Overall dimensions, mm ..... 48 x 53 x 230    48 x 53 x 265    48 x 53 x 330
Mass, kg..... 0.34    0.37    0.42