Kapro 884G Prolaser 4D XTRA Manual Del Usuario página 16

8) Without turning the laser level, move the laser level towards
wall B and position it approximately 0.5 meter from wall B.
9) Verify that the vertical line passes through a1 and b1.
10) On wall B, mark the center of the cross beams as b2
(see figure# 3).
A
a1
X
11) Turn the laser 180°. Reposition the laser and verify that the
2 vertical lines pass through b2 and a1.
12) On wall A, mark the center of the cross beams as a2
(see figure # 4).
16
C
Figure # 3
2m
B
b1
X
b2
X
0.5m