CST/BERGER MP3 Manual Original página 25

– Rotate the measuring tool by 180° without changing the height. Allow it to
level in and mark the centre point of the laser beam on wall A (point III). Take
care that point III is as vertical as possible above or below point I.
– The difference d of both marked points I and III on wall A results in the
actual height deviation of the measuring tool alongside the Longitudinal axis.
On the measuring distance of 2 x 20 m = 40 m, the maximum allowable devia-
tion is:
MP3: 40 m x ± 0.2 mm/m = ± 8 mm.
XP5: 40 m x ± 0.2 mm/m = ± 8 mm.
Consequently, the difference d between points I and III must not exceed 8 mm
(max.) for the MP3 and 8 mm (max.) for the XP5.
Checking the Vertical Levelling Accuracy
For this check, a free measuring distance of approx. 5 m between floor and ceil-
ing on a firm surface is required.
– Draw a straight line on the ceiling.
– Position the measuring tool in such a manner that the upper plumb beam
points against the line on the ceiling. Allow the measuring tool to level in.
Mark the centre of the upper laser point on the line on the ceiling (point I).
Also, mark the centre of the laser point on the floor (point II).
2 610 A15 119 • 22.10.09
A
d
B
180˚
5 m
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