KRT706510 EN
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▪ Measuring reference and unit set key (4): press short to set measurement reference
(instrument tail, front end, ¼ copper nut center)
▪ Addition and subtraction operations key (5): press short to enter the addition or subtraction
measurement mode.
▪ Indirect measurement key (6): press short to respectively enter single Pythagorean mode,
double Pythagorean plus mode and double Pythagorean minus mode.
▪ Main function key (7): press short to enter respectively rectangular area, volume, area of
triangle, a right angle trapezoid area, and area accumulation measurement mode.
8.2 The color display icon description (fig.2)
▪ A: horizontal and vertical angle display
▪ B: the laser signal strength display
▪ C: the measuring reference display
▪ D: laser opening indication
▪ E: the present function mode display area
▪ F: addition and subtraction operation status display area
▪ G: the battery power display
▪ H: measurement data display area
▪ I: automatic angle measuring display interface
▪ J: present measuring
8.3 Attention points
▪ Don’t point this instrument to the sun or other intense light sources, as it will cause your
measurements erroneous or inaccurate.
▪ Don’t use the instrument in damp, dusty and other harsh environments. Long time
exposure to adverse environments will damage internal components of this laser
rangefinder or result in inaccurate measurements.
▪ When this instrument is brought from one environment to another environment whose
ambient temperature defers greatly from the previous one, it can be only when it has
roughly the same temperature with the ambient one.
▪ This instrument may have errors when measuring some light colored liquids, transparent
glass panes, polystyrene foams or low-density objects.
▪ The highly reflective surface of any object to be measured will skew the laser beam and
then result in an erroneous measurement.
▪ A highly luminous environment, in combination with a measurement surface of low
reflection effect will shorten the measuring range and reduce the measurement accuracy.
8.4 Inserting/Replacing the batteries
Alkali-manganese batteries are recommended for the measuring tool. To open the battery lid,
remove screws with screwdriver and insert the batteries. When inserting, pay attention to the
correct polarity according to the representation on the inside of the battery compartment.
8.5 Initial operation
▪ Protect the measuring tool against moisture and direct sun light.
▪ Do not subject the measuring tool to extreme temperatures or variations in temperature.
As an example, do not leave it in vehicles for longer periods. In case of large variations in
temperature, allow the measuring tool to adjust to the ambient temperature before putting
it into operation. In case of extreme temperatures or variations in temperature, the
accuracy of the measuring tool can be impaired.
▪ Avoid heavy impact to or falling down of the measuring tool. Damage to the measuring
tool can impair its accuracy. After heavy impact or shock, compare the laser lines with a
known horizontal or vertical reference line.
