Ironside Prolaser 3D All-Lines Mode D'emploi page 16

8) Without turning the laser level, lock the pendulum and move the
laser level towards wall B and position it approximately 0.5 meter
from wall B.
9) Unlock the pendulum and press the Beam Selector (a) twice to
project all 3 lasers beams.
10) Verify that the vertical line passes through a1and b1.
11) On wall B, mark the center of the cross beams as b2 (see figure
# 3).
12) Turn the laser 180°. Reposition the laser and verify that the 2
vertical lines pass through b2 and a1.
13) On wall A, mark the center of the cross beams as a2 (see
figure # 4).
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