Operation; Start-Up; Switching On/Off; Measuring Process - Bosch GLM 20 Original Instructions Manual

10 | English

Operation

Start-Up

Never leave the measuring tool unattended when switched on, and
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ensure the measuring tool is switched off after use. Others may be
dazzled by the laser beam.
Protect the measuring tool from moisture and direct sunlight.
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Do not expose the measuring tool to any extreme temperatures or
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variations in temperature. For example, do not leave it in a car for ex-
tended periods of time. In case of large variations in temperature, allow
the measuring tool to adjust to the ambient temperature before putting it
into operation. The precision of the measuring tool may be compromised
if exposed to extreme temperatures or variations in temperature.
Avoid subjecting the measuring tool to violent jolts and falls. Always
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check the measuring tool before continuing work if it has been subjected
to severe external influences (see "Checking the Measuring Tool",
page 14).

Switching On/Off

To switch on the measuring tool, press the on/off button (1). When the
measuring tool is switched on, the laser beam is switched on. The laser sym-
bol flashes on the display.
To switch off the measuring tool, press and hold the on/off button (1) for at
least three seconds.
If no button on the measuring tool is pressed for approx. 5 mins, the measur-
ing tool will automatically switch itself off to preserve battery life.

Measuring Process

A continuous measurement is performed after the measuring tool has been
switched on. Aim the laser beam at the target surface. The current measured
value (g) is shown on the bottom line of the display (see figure A). During
continuous measurement, the measuring tool can be moved relative to the
target and the current measured value (g) will be updated approx. every 0.5
seconds on the bottom line of the display (see figure B). You can, for ex-
ample, move a desired distance away from a wall while reading off the cur-
rent distance at all times. The laser symbol
1 609 92A 4JT | (05.09.2018)
flashes on the display.
Bosch Power Tools