180LR, 180LG
Users Manual
8
Check Accuracy of Vertical Laser
To check the accuracy of the vertical laser:
1. Find a door jamb that has 2.44 m (8 ft) clearance on
bo
th sides of the door.
2. Put a cross mark (mark 1)
on the floor centered on the
door header. See Figure 6.
3. Put a second cross mark (mark 2)
2.44 m (8 ft) from
mark 1. U
se the vertical laser to make sure that mark 2
is centered on the door header and intersects mark 1.
4. Put the Product on mark 2
with the vertical laser on.
5. Put a third cross mark (mark 3)
on the floor 4.88 m
(16 ft) from the Product. Use the vertical laser to make
su
re that mark 3 is
centered on the door header and
intersects mark 1.
6. Put a cross mark
on the door header above mark 1.
7. Move the Product to mark 3 and
align the laser so that it
intersects the centers of marks 1 an
d 2.
8. Put another cross mark
on the door header above
mark 1.
If the first and second cross marks on the door header
ar
e the same, the laser calibration is accurate.
9. If the cross marks are not the same, measure the
d
istance between the center points of the two cross
marks.
If the distance is ≤1.58 mm, the laser is within
calibrat
ion accuracy.
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