Kapro Prolaser 3D All Lines Green 8832G Manual Del Usuario página 20

6) Mark point a2 on the wall, in the middle of the vertical beam
at the same height as a1. (see figure 6).
Figure 6
7) The distance between a1 and a2, should be no more than
1 mm, otherwise send the laser level to a qualified technician
for repair.
20
x
2 m
a2 x
x
a1