Kapro Prolaser 852, User Manual

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8) Turn the laser 180° towards wall A , and mark on the wall the
center of the cross lines as a2 (see figure 4).
9) Measure the distances:
Δa= |a2 - a1 |
Δb= | b1 - b2 |
10) The difference | Δa – Δb| should not be more than 3 mm,
otherwise to send the laser level to a qualified technician
for repairs.
Checking the Level Accuracy of Horizontal Line.
(Side to side inclination)
1) Set up the laser on a tripod or on a solid surface at a distance
of approximately 1.5 meters from a wall 5 meter long.
2) Unlock the pendulum and press the button to project the
horizontal and the vertical cross lines towards the wall.
B A
a1
b1 x
b2 x
x
a2x
180°
Figure # 4