The Pro 1M emits invisible, eye safe, infrared energy pulses. The Pro 1M Advanced Digital microprocessor and ASIC chip (Application-Specific Integrated Circuit) results in instantaneous and accurate readings every time. Sophisticated digital technology instantaneously calculates distances by measuring the time it takes for each pulse to travel from the rangefinder, to the target, and back.

The ranging accuracy of the Pro 1M is +/- one yard/meter under most circumstances. The maximum range of the instrument depends on the reflectivity of the target. The maximum distance for most objects is 1,000 yards (914 meters) while for highly reflective objects the maximum is 1,760 yards (1,609 meters). Note: You will get both longer and shorter maximum distances depending on the reflective properties of the particular target and the environmental conditions at the time the distance of an object is being measured. The color, surface finish, size and shape of the target all affect reflectivity and range.

The Pro 1M Slope has fully multi-coated optics for superior sharpness and clarity. Features a 7x magnification and 26mm objective diameter, with a field of view of 340 ft at 1,000 yards.

Slope technology is essential for measuring distances on an angle. Without Slope technology, ranges for uphill shots would fall short of the target. The Pro 1M Slope is equipped with a built-in accelerometer-based inclinometer that digitally displays the exact slope angle from -20 to +20 degrees of elevation and is +/- 1.0 degree accurate. Slope compensation calculates and adjusts yardage depending on the degree of slope.