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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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