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Changing the Unit of Measure
Unit of measure "m" (metres) is set by default.
Switch the measuring tool on.
Press and hold the 7 [Func] button to enter the "basic
configurations "menu. Select the type of measuring
device you use:
– "m/cm" (3 601 K72 H50)
– "ft/m" (3 601 K72 HK0)
– " /m" (3 601 K72 HC0)
Press button 3 [+] or button 8 [–], to change the unit
of measure.
Press the On/Off button 5 [
] to exit the menu item.
The selected setting remains saved after you switch
off the measuring tool.
Switching the Sound On and Off
The sound is switched on by default.
Switch the measuring tool on.
Press and hold the 7 [Func] button to enter the "basic
configurations "menu. Select
. Press the 3 [+] but-
ton or the 8 [–] button to switch the sound on and off.
To exit the menu item, press the measuring button
2 [
] or the On/Off button 5 [
ting remains saved after you switch off the measuring
tool.
Working Advice
General Information
The reception lens 14 and the laser beam outlet 15
must not be covered when taking a measurement.
The measuring tool must not be moved while taking a
measurement. Therefore, place the measuring tool,
as far as this is possible, against or on a firm stop or
supporting surface.
Influence Effects on the Measuring Range
The measuring range depends on the lighting condi-
tions and the reflective properties of the target sur-
face. For better visibility of the laser beam in extrane-
ous light, use the laser viewing glasses 18
(accessories) and the laser target plate 17 (accesso-
ries) or shade the target area.
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot
be excluded when measuring on different surfaces.
Included here are:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal, glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural
stone).
If required, use the laser target plate 17 (accessory)
on these surfaces.
Furthermore, faulty measurements are also possible
when sighting inclined target surfaces.
Also, air layers with varying temperatures or indirect-
ly received reflections can affect the measured value.
Accuracy Check and Calibration of the Grade
Measurement (Tilt Calibration)
(see figures E1 – E2)
Regularly check the accuracy of the grade measure-
ment. This is done by carrying out a reversal measure-
ment. For this, place the measuring tool on a table and
measure the grade. Turn the measuring tool by 180 °
and measure the grade again. The difference of the in-
dicated reading may not exceed by more than 0.3 °
(max.).
In the event of larger deviations, you have to recali-
brate the measuring tool. For this, select
the instructions on the display.
After severe temperature changes and impact, we
recommend an accuracy check and, if required, to re-
calibrate the measuring tool. After a temperature
change, the measuring tool must acclimate for a while
before calibrating.
]. The selected set-
. Follow
CAL
Accuracy Check of the Distance Measurement
The accuracy of the measuring tool can be checked as
follows:
– Select a permanently unchangeable measuring
section with a length of approx. 3 to 10 metres; its
length must be precisely known (e.g. the width of
a room or a door opening). The measurement
should be carried out under favourable conditions,
meaning, the measuring distance must be indoors
and the target surface for the measurement must
be smooth and reflect well.
– Measure the distance 10 times in succession.
The deviation of the individual measurements from
the average value must not exceed ±4 mm over the
entire measuring section in favourable conditions.
Record the measurements in order to be able to com-
pare the accuracy at a later date.
Working with the Tripod (Accessory)
The use of a tripod is particularly necessary for larger
distances. Position the measuring tool with the 1/4"
thread 13 onto the quick-change plate of the tripod
19 or a commercially available camera tripod. Tighten
the measuring tool with the locking screw of the
quick-change plate.
Set the corresponding reference level for measure-
ment with a tripod by pushing button 4 (the reference
level is the thread).
Error Message
If a measurement cannot be performed correctly, the
error message "Error" appears in the display. Switch
the measuring tool off and back on, and start the
measurement again.
The measuring tool monitors correct
functioning in every measurement. If a
defect is detected, the display will in-
dicate only the symbol shown oppo-
site and the measuring tool switches it-
self off. In this case, have the
measuring tool checked by an after-sales service
agent for Bosch power tools.
Maintenance and Service
Maintenance and Cleaning
Keep the measuring tool clean at all times.
Do not immerse the measuring tool in water or other
fluids.
Wipe off debris using a moist and soft cloth. Do not
use any cleaning agents or solvents.
Maintain the reception lens 14 in particular, with the
same care as required for eye glasses or the lens of a
camera.
If you discover a fault or require a repair, send the
measuring tool to an authorised Bosch after-sales ser-
vice agent.
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