Influences On Accuracy - Bosch GLL3-300 Consignes De Fonctionnement/Sécurité

Influences on Accuracy

The ambient temperature has the greatest
influence. Especially temperature differences
occurring from the ground upward can divert
the laser beam.
Because the largest difference in temperature
layers is close to the ground, the
should always be mounted on a tripod when
distances exceeding 65 ft. If possible, also set
up the tool in the center of the work area.
Apart from exterior influences, device-specific
influences (such as heavy impact or falling
down) can lead to deviations. Therefore,
check the accuracy of the tool each time
before starting your work.
Firstly, check the leveling accuracy of the
horizontal laser line and then the leveling
accuracy of the vertical laser line.
Should the tool exceed the maximum
deviation during one of the tests, please have
it repaired by a Bosch after-sales service.
Checking the Horizontal
Leveling Accuracy.
A free measuring distance of 16 ft on a
firm surface in front of two walls A and B is
required for the check.
– Mount the tool onto a tripod, or place it on a
firm and level surface close to the wall A.
Switch the tool on. Select cross-line
operation with automatic leveling. Select
the operating mode in which a horizontal
and vertical laser plane is g e n e r a t e d i n
front of the tool.
16 ft (5m)
– Direct the laser against the close wall A and
allow the tool to level in. Mark the center of
the point where the laser lines cross each
other on the wall (point I).
2610048966 GLL3-300 01-18.indd 12
Leveling Accuracy
tool
– Turn the tool by 180°, allow it to level in and
mark the cross point of the laser lines on
the opposite wall B (point II).
– Without turning the tool, position it close to
wall B. Switch the tool on and allow it to
level in.
– Align the height of the tool (using a tripod or
by underlaying, if required) in such a
manner that the cross point of the laser
lines is projected against the previously
marked point II on the wall B.
d
B
– Without changing the height, turn around
the tool by 180°. Direct it against the wall A
in such a manner that the vertical laser line
runs through the already marked point I.
Allow the tool to level in and mark the cross
point of the laser lines on the wall A (point III).
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180˚
180˚
B
B
B
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