Vortex Razor HD 4000 Laser RangefinderThe Vortex Razor HD 4000 Laser Rangefinder is a rugged, lightweight monocular rangefinder with four different targeting modes (Normal, First, Last, and Extended Laser Range ELR). There are also three recording modes (Normal, Normal Scan, and ELR. Finally, there are two measurement modes (angle compensated and line of sight). Maximum reflective range is 2400 yards in either normal mode and 4000 yards in ELR. Accuracy is 0. 5 yards (<200 yds), 1 yd (200