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ACCURACY CHECK
This cross laser left the factory fully calibrated. Milwaukee recommends the user to check the accuracy of
the laser periodically, especially if the unit falls or is mishandled.
If the maximum deviation of the laser is exceeded in one of the accuracy checks, please contact one of
our Milwaukee service agents (see our list of guarantee/service addresses).
1. Checking the height accuracy of the horizontal beam.
2. Checking the leveling accuracy of the horizontal beam.
3. Checking the leveling accuracy of the vertical beam.
4. Checking Plumb accuracy
5. Squaring
Before checking the laser accuracy, after mounting the laser on the tripod, check the leveling of the
tripod.
CHECKING THE HEIGHT ACCURACY OF THE HORIZONTAL BEAM
1
(UP AND DOWN DEVIATION)
1. Set up the laser on a tripod or on a flat surface
between two walls A and B, approximately 10 meters apart.
2. Position the laser level approximately 0.5 meter from wall A.
3. Switch ON the self-leveling mode and press the mode button to project the horizontal and the vertical
cross beams towards wall A.
4. Mark the center of the cross beams on the wall as a1.
A
a1
0,5 m
ENGLISH
180°
B
≈ 10 m
a1
a1
0,5 m
5. Turn the laser 180° towards wall B and mark the center of the cross beams as b1 on the wall.
0,5 m
0,5 m
180°
180°
180°
a1
a1
a1
6. Move the laser level towards wall B and position it approximately 0.5 meter from wall B.
7. Mark on wall B the center of the cross beams as b2.
If the b1 & b2 is not overlapping, adjust the tripod height to make sure b1& b2 overlapping.
A
A
A
a1
a1
a1
8. Turn the laser 180° towards wall A, and mark on the wall the center of the cross beams
A
as a2.
a2
a1
A
A
A
a2
a2
a1
a1
a1
9. Measure the distances:
Δa= |a2 - a1|
10. Δa should be no more than 6 mm.
C
b1
b1
b1
B
b1, b2
B
B
b1, b2
b1, b2
0,5 m
0,5 m
0,5 m
B
180°
b1, b2
B
B
180°
180°
b1, b2
b1, b2
B
b1
10
A
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