15
5.3
Factors affecting measuring distance
Though maximum measurement distance depends on
target reflectivity, weather conditions and other
conditions, for most targets the unit will provide accurate
ranging for up to 3,000 meters. Under good conditions a
large size target can be measured up to 4,000 meters.
Target reflectivity depends on its color, surface finish,
size, shape, position in relation to the laser beam, etc.
Bright target colors are more reflective than darks. A
polished surface is more reflective than a rough one.
Larger targets reflect better than small ones. Ranging a
target perpendicular to the laser beam provides better
results than the one positioned at a sharp angle to the
beam.
Weather conditions that influence air transparency (rain,
fog, snow, mist) reduce maximum range. Bright sunny
days will reduce performance as well as IR sun radiation
may cover reflected laser impulses.
While the unit will measure through many glass types,
measuring through glass may reduce accuracy.
Natural hand tremor decreases the accuracy of long
distance ranging. Using of a tripod is highly
recommended.
Note: device may produce false readings when reticle is
aimed at the sun or in ± 20
˚
solid angle from the sun.
