Kapro Prolaser 862 - Checking the Level Accuracy of Horizontal Line. (Side to side inclination)

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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 gure 4).
9) Measure the distances:
Δa= |a2-a1|
Δb= |b1-b2|
10) The difference | Δa – Δb| should not be more than
2 mm, otherwise to send the laser level to a qualied
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 meters long.
2) Unlock the pendulum and press the button to project the
horizontal and the vertical cross lines towards the wall.
x a2
x a1
x b1
b2
x
A B
180°
Figure # 4