Do not leave the switched on measuring tool unattended
and switch the tool off after use. Other persons could be
blinded by the laser beam.
During work, ensure that the reception lens 20, laser beam
output 19, and camera 18 are not closed off or covered,
otherwise correct measurement will not be possible.
– To switch on the measuring tool and the laser, briefly press
the On/Off button 9 [ ], front or side measuring button 2 [ ].
Do not point the laser beam at persons or animals and
do not look into the laser beam yourself, not even from a
large distance.
– To switch off the laser, press the On/Off button 9 [ ].
– To switch off the digital viewfinder, press the digital
viewfinder button 10.
– To switch off the measuring tool, press and hold the On/Off
button 9 [ ].
The measured values and device settings in the memory are
retained when you switch the tool off.
Once switched on, the measuring tool is in the length
measurement function. For a different measuring function,
press the button 13 [Func]. Select the desired measuring
function with the buttons 4 [+] or the button 11 [–] (see
"Measuring Functions", page 29). Activate the measuring
function with button 13 [Func] or with the measuring button
2 [ ].
After switching on, the rear edge of the measuring tool
is preset as the reference level for the measurement. To
change the reference level, see "Selecting the Reference
Level", page 24.
Place the measuring tool against the desired starting point of
the measurement (e.g. a wall).
Note: If the measuring tool has been switched on using the
On/Off button 9 [ ], briefly press the measuring button 2 [ ]
to switch the laser on.
To initiate the measurement, briefly press the measuring
button 2 [ ]. Then the laser beam is switched off. For a
2610050173 04-18 GLM400CL.indd 23
Switching On and Off
Measuring Procedure
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