Bosch GLL 2-50 Professional Originalbetriebsanleitung Seite 19

– Without turning the measuring tool, position
it close to wall B. Switch the measuring tool
on and allow it to level in.
A
– Align the height of the measuring 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.
A
d
– Without changing the height, turn around the
measuring 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 measuring tool to level in and mark
the the cross point of the laser lines on the
wall A (point III).
– The difference d of both marked points I
and III on wall A indicates the actual height
deviation of the measuring tool.
The maximum permitted deviation d
lated as follows:
d = double distance of the walls x 0.3 mm/m
max
Example: With a 5 metre distance between the
walls, the maximum deviation must not exceed
d = 2 x 5 m x 0.3 mm/m = 3 mm. Thus, the
max
marks must not be more than 3 mm apart.
Bosch Power Tools
Checking the Levelling Accuracy of the
Horizontal Line
For the check, a free surface of approx. 5 x 5 me-
tres is required.
– Set up the measuring tool on a firm, level sur-
B
B
180˚
– At a distance of 2.5 metres from the measur-
is calcu-
max
– Set up the measuring tool 5 metres away
– Align the height of the measuring tool
face between both walls A and B. Allow the
measuring tool to level in while in horizontal
operation.
A
ing tool, mark the centre of the laser line
(point I on wall A and point II on wall B) on
both walls.
A
turned by 180° and allow it to level in.
(using a tripod or by underlaying, if required)
in such a manner that the centre of the
laser line is projected exactly against the
previously marked point II on wall B.
English | 19
B
B
1 609 929 S02 | (8.9.08)