The large range of the Vortex Ranger 1300 Distance Meter makes it suitable for hunting, sport and bird watching. You measure the distance of objects from 9 up to 1646 meters. Thanks to the waterproof design you also take the monocular with bad weather. The lenses contain a special coating that reduces reflections. This gives you a clear picture. With the 2 buttons at the top you control the distance meter. You put it in different modes. When you want to set off your weapon with the help of the odometer on your target, you use the LOS mode. With the scan mode you measure the distance to moving subjects, for example animals or cars.