Switching On/Off; Measuring Process - Bosch GLM 80 Professional Notice Originale

22 | English
The measuring tool cannot be used during the charging pro-
cedure.
Protect the charger against moisture.
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Recommendations for optimal handling of the battery in
the measuring tool
Only charge the measuring tool in the permissible temperat-
ure range, (see "Technical data", page 20). As an example,
do not leave the measuring tool in a vehicle during the sum-
mer.
A significantly reduced operating time after charging indic-
ates that the battery has deteriorated and must be replaced
by the Bosch after-sales service.
Follow the instructions on correct disposal.
Operation
Start-Up
Protect the measuring tool from moisture and direct
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sunlight.
Do not expose the measuring tool to any extreme tem-
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peratures or variations in temperature. For example,
do not leave it in a car for extended periods of time. In
case of large variations in temperature, allow the measur-
ing tool to adjust to the ambient temperature before put-
ting it into operation. The precision of the measuring tool
may be compromised if exposed to extreme temperat-
ures or variations in temperature.
Avoid substantial knocks to the measuring tool and
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avoid dropping it. Always carry out an accuracy check
before continuing work if the measuring tool has been
subjected to severe external influences (see "Checking
accuracy and calibrating the grade measurement (see fig-
ure H)", page 26) and (see "Accuracy check of the dis-
tance measurement", page 26).

Switching on/off

Never leave the measuring tool unattended when
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switched on, and ensure the measuring tool is
switched off after use. Others may be dazzled by the
laser beam.
The following options are available for switching on the
measuring tool:
– Pressing the on/off button (8): The measuring tool is
switched on in the length measurement function. The
laser is not switched on.
– Pressing the measuring button (2): Measuring tool and
laser are switched on. The measuring tool will be in the
length measurement function. When the measuring tool is
inserted in the measuring rail (25), the grade measure-
ment function is activated.
Do not direct the laser beam at persons or animals and
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do not stare into the laser beam yourself (even from a
distance).
To switch off the measuring tool, press and hold the on/off
button (8).
1 609 92A 55A | (05.08.2019)
If no button on the measuring tool is pressed for approx. five
minutes, then the measuring tool will automatically switch it-
self off to preserve battery life.
If the angle has not been changed for approx. five minutes
while the measuring tool is in the "grade measurement" oper-
ating mode, the tool will automatically switch itself off to pre-
serve battery life.
All saved values are retained when the tool is automatically
switched off.

Measuring process

After the measuring tool has been switched on by pressing
the measuring button (2), the tool is always in the length
measurement function by default, or in the grade measure-
ment function if the tool has been inserted into the measur-
ing rail (25). Other measuring functions can be switched to
by pressing the respective function button (see "Measuring
functions", page 23).
Once the measuring tool has been switched on, the rear
edge of the measuring tool is selected as the reference level
for measurement. You can change the reference level by
pressing the reference level selection button(10) (see "Se-
lecting the reference level (see figure A)", page 22).
Apply the measuring tool with the selected reference level to
the point at which you want to start the measurement (e.g.
wall).
To switch on the laser beam, briefly press the measuring but-
ton (2).
Do not direct the laser beam at persons or animals and
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do not stare into the laser beam yourself (even from a
distance).
Aim the laser beam at the target surface. To initiate the
measurement, briefly press the measuring button (2) again.
While the laser beam is continuously switched on, measure-
ment will begin after the first press of the measuring button
(2). In the continuous measurement function, measurement
begins as soon as the function is activated.
The measured value typically appears within 0.5 seconds
and no later than 4 seconds. The duration of the measure-
ment depends on the distance, the lighting conditions and
the reflective properties of the target surface. The end of the
measurement is indicated by an audio signal. Upon comple-
tion of the measurement, the laser beam is automatically
switched off.
If no measurement has been performed within approx.
20 seconds of aim being taken, the laser beam is switched
off automatically to preserve battery life.
Selecting the reference level (see figure A)
You can choose between four different reference levels for
the measurement:
– The rear edge of the measuring tool or the front edge of
the measuring pin (9) when it has been folded out by 90°
(e.g. when applying the tool to outer corners)
– The tip of the measuring pin (9) when it has been folded
180° (e.g. when measuring from a corner)
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