-23-
– 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).
d
180°
A
B
Pr
ofess
i
onal
G
CL
2-55
– The difference d of both marked points I and III on wall A indicates
the actual height deviation of the measuring tool.
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