-30-
Z-Axis Calibration (GRL 500 HV)
– Mark a vertical line on the wall using a
plumb line.
– Mount the measuring tool in the vertical
position on a tripod 63 (accessory).
– Place the tripod 15-30 ft (5-10 m) in front
of the wall.
– Switch the measuring tool on.
– Simultaneously press the
calibration button 25 and
the slope button 20 for
approx. 2 s.
The symbol for
completing calibration is
shown on the display.
– Align the tripod so that
the laser beam crosses
the vertical line on the
wall.
The out-of-level
indicator 37 flashes
during automatic
leveling.
– Wait until the measuring tool is leveled in.
– Press the slope button
18 or 20 until the laser
beam is as parallel as
possible to the vertical
line on the wall.
– If you do not achieve
congruence, repeat the
previous steps (align tripod,
allow measuring tool to level
in, align laser beam using
slope buttons).
– Press the calibration button
25 to save the calibration.
The symbol for completing
calibration is shown on the
display.
– Check the leveling accuracy after
calibration (see “Checking the Leveling
Accuracy in the Vertical Position”, page
28). If the deviation is still outside of the
maximum permitted limit of ± 3/64 in (± 1
mm), have the measuring tool checked
by a Bosch customer service agent.
Working Advice
The measuring tool is equipped with
a radio interface. Local operating
restrictions, e.g. in airplanes or hospitals,
are to be observed.
Always use the center of the laser line for
marking. The width of the laser line changes
with the distance.
Setting the Display of the Units
The distance between rotational plane and
center line is shown on the display in [mm] or
[inch: decimals/fractions].
The default setting in the delivery condition
is [mm].
– Simultaneously press the
measuring accuracy setting button
23 and the slope button 20
repeatedly until the desired setting
is reached.
The setting for the units is saved when the
tool is switched off.
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