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21
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.
Switching On and Off
During work, ensure that the reception lens 20, laser beam
output 18, and digital viewfinder 19 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.
Measuring Procedure
Once switched on, the measuring tool is in the continuous
laser 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 27). 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 22.
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.
2610049010 04-18 GLM400C.indd 21 4/6/18 8:20 AM
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