Leupold RX-750 TBR With a built-in inclinometer, the RX-750 TBR calculates the ballistics range to your target, then displays it as a holdover aim point, an MOA adjustment, or the equivalent horizontal distance. Enhanced signal processing for faster, more accurate readings. (Compared to previous RX-II model) 6x magnification gives you plenty of power, with a wide field of view to track movement. Rugged, weatherproof construction. Fully multicoated lens system for a bright, pristine image.