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4. Mark the center of the beam at two locations (a, b) at
least 30' (9 m) apart.
5. Reposition the laser level to the opposite end of the wall.
6. Turn on the laser level's horizontal beam and pivot the
laser level back toward the first end of the wall and
approximately parallel to the adjacent wall.
7. Adjust the height of the laser level so that the center of
the beam is aligned with the nearest mark (b).
8. Mark the center of the beam (c) directly above or below
the farthest mark (a).
9. Measure the distance between these two marks (a, c).
•
If the measurement is greater than the values shown
below, the laser level must be serviced at an authorized
service center.
Distance Between Walls
30'
40'
50'
Distance Between Walls
9.0 m
12.0 m
15.0 m
Checking Accuracy – Vertical Beam (Fig. G)
Checking the vertical (plumb) calibration of the laser level
can be most accurately done when there is a substantial
amount of vertical height available, ideally 20' (6 m), with
one person on the floor positioning the laser level and
another person near a ceiling to mark the position of the
beam. It is important to conduct a calibration check using a
distance no shorter than the distance of the applications for
which the tool will be used.
1. Start by marking a 5' (1.5 m) line on the floor.
2. Power on the laser and slide the pendulum lock/unlock
and power switch
13
Turning the Laser On.
14
Allowable Distance
Between a and c
1/4"
5/16"
13/32"
Allowable Distance
Between a and c
6.2 mm
8.3 mm
10.4 mm
to the vertical position. Refer to
3. Turn on the laser level's vertical beam and position the
unit at one end of the line, facing the line.
4. Adjust the unit so its beam is aligned and centered on
the line on the floor.
5. Mark the position of the laser beam on the ceiling (a).
Mark the center of the laser beam directly over the
midpoint of the line on the floor.
6. Reposition the laser level at the other end of the line
on the floor. Adjust the unit once again so its beam is
aligned and centered on the line on the floor.
7. Mark the position of the laser beam on the ceiling (b),
directly beside the first mark (a).
8. Measure the distance between these two marks.
•
If the measurement is greater than the values shown
below, the laser level must be serviced at an authorized
service center.
Distance Between Floor
and Ceiling
8'
10'
14'
20'
Distance Between Floor
and Ceiling
2.5 m
3.0 m
4.0 m
6.0 m
Using the Laser (Fig. K)
Leveling the Laser
As long as the laser level is properly calibrated, the laser level
is self‑leveling (in pendulum unlocked mode). Each laser
level is calibrated at the factory to find level as long as it is
positioned on a flat surface within average ± 4 ° of level. No
manual adjustments are required.
Allowable Distance
Between a and b
1/16"
3/32"
1/8"
3/16"
Allowable Distance
Between a and b
1.7 mm
2.1 mm
2.8 mm
4.1 mm
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