Bosch GLM 15 Consignes D'utilisation/De Sécurité page 12

After the measuring tool is switched on, continuous measurement
starts. Aim the laser beam at the target surface.
The current measuring value g is displayed in the bottom line of
the display (see figure A). During continuous measurement, the
measuring tool can be moved relative to the target, whereby the
current measuring value g is updated approx. every 0.5 seconds in
the bottom line of the display (see figure B).
In this manner,as an example, you can move a certain distance
away from a wall, while the actual distance can always be read.
The laser indicator
The rear edge of the measuring tool is preset as the reference
plane for the measurement.
For a wall to wall measurement, as an example, position the
measuring tool with its rear edge against the initial wall.
No Measurement Being Displayed
All dashes will display when the beam is
moved too fast or if the object is out of range
in continuous mode.
"HOLD" Function (see Figure B)
flashes on the display.
Press the "On/Off" button 1 to stop the
measuring procedure. The laser beam
is switched off and the HOLD indication
appears on the display.
The current measuring value is still displayed
in the bottom line of the display, but is no
longer continuously updated.
Press the "HOLD" button 1 once more to
switch the laser on again. The laser indicator
flashes on the display. The previous
measuring value is displayed in the top line.
The continuously updated/current measuring
value is displayed in the bottom line.
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