Accuracy - Leupold GX-2c Operating Instructions Manual

ACCURACY

The ranging accuracy of the GX-2c rangefinder is +/- .5 yard/
meter . The maximum effective range depends upon a number
of factors including lighting conditions and air quality, but the
most important factor is the reflectivity of the target . For most
objects, the maximum distance is 500 yards, while for highly
reflective targets, distances of 700 yards can be obtained .
HOW IT WORKS
The Leupold GX rangefinders emit a series of invisible, infrared
energy pulses that reflect off the selected target back to the
optical unit . State-of-the-art circuitry and precision computing
circuits calculate the distance instantaneously by measuring the
time it takes for each pulse to travel from the GX rangefinder to
the object and back .
Surface texture, color, size, and shape of the target all affect
reflectivity, which in turn affects the maximum range of the
rangefinder . As a rule of thumb, brightly colored targets are
much more reflective than darker targets, with black being
the least reflective color . A shiny surface is more reflective
than a dull surface . Smaller targets are more difficult to range
than larger targets . Light conditions, haze, fog, rain, and other
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