LX2 Professional series. 30mm main tube. Fifteen hash marks on each quadrant, 1 MOA apart with magnification set to 20x, facilitate versatile and simple aiming off points. The over-sized windage and elevation adjustment controls have large high-contrast white-on-black lettering that are easy to read in poor light with a minimum of visual clutter, and return to zero direction indicator. Each click adjusts the point of aim +/- 1/4 MOA (8mm @ 100) and each full turn of the control adjusts 12 MOA. The 2.5mm thick @ 20x reticle lines are fine enough to use for long range target shooting but are still visible for shooters with less than perfect eyesight.