Bosch GLM400C Consignes D'utilisation Et De Sécurité page 22

To initiate the measurement, briefly press the measuring
button 2 [ ]. Then the laser beam is switched off. For a
further measurement, repeat this process.
With the laser beam continuously switched on and in the the
continuous measurement function, measurement will begin
after the measuring button 2 [ ] is pressed for the first time.
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.
Note: The measured value typically appears within 0.5 s and
no later than approx. 4 s. The duration of the measurement
depends on the distance, the lighting conditions and the
reflective properties of the target surface. Upon completion of
the measurement, the laser beam is automatically switched
off. The continuously switched-on laser beam is not switched
off after the measurement (see "Permanent Laser Beam",
page 23).
Selecting the Reference Level (see figure A)
You can choose between four different reference levels for
the measurement:
– the rear measuring-tool edge (e.g. when measuring onward
from a wall),
– the tip of the 180° folded-out measuring pin 8 (e.g. when
measuring from a corner),
– the front measuring-tool edge (e.g. when measuring
onward from a table edge),
– the center of thread 17 (e.g. for tripod measurements).
Folding out and in of the measuring pin 8 by 180° is detected
automatically and the appropriate reference level is
suggested. Confirm the setting by pressing the measuring
button 2 [ ].
Use the soft key 3 [
measuring tool. Use buttons 4 [+] or 11 [–] to select the
reference level and confirm this by pressing button 13 [Func].
The rear edge of the measuring tool is automatically preset
as the reference level every time the measuring tool is
switched on.
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] to select the basic settings for the
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