Bosch GLL 50 Operating/Safety Instructions Manual page 23

A
B
180°
– Without turning the measuring tool, position it close to wall B. Switch
the measuring tool on and allow it to level in.
– Align the height of the measuring tool (using a tripod or by underlay-
ing, 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
B
– 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 measur-
ing tool to level in and mark the cross point of the laser lines on the
wall A (point III).
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