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Checking plumblining
1. Switch the unit on
2. Place the laser so that its down beam is over a reference mark on the floor.
3. Locate the position of the up beam on the ceiling and make a mark.
4. Rotate the laser 180° and realign the down beam over the reference mark
on the floor.
5. Locate the position of the up beam on the ceiling and make a mark.
6. Measure the difference D between the two marks on the ceiling,
which will be twice the actual error.
The difference may not be greater than: 3 mm in 5 m ( 1/8“ in 16‘5“ ).
Checking Level 90° Calibration between horizontal and
right angle
1. Find a room at least 10 m (35 ft) long.
Mark a point (A) on the floor at one end of the room.
2. Set up the laser so that its down beam is over point A.
Make sure the level beam points toward the far end of the room.
3. Mark a point (B) on the floor at the center of the room using a target
to transfer the level beam location to the floor.
4. Mark a point (C) on the far wall or transfer the level beam location to the floor.
5. Move the LA-5PG to point B and align the level beam to point C again.
6. Mark the location of the square beam (D) on the floor.
Tip:
To ensure accuracy, the distances from A to B, B to C,
and B to D should be equal.
7. Turn the LA-5PG 90° so that the level beam aligns with point D.
8. Mark the location of the square beam (E) on the floor as close
as possible to point A.
9. Measure the distance between points A and E.
Room length or distance
between points A and C
The 90° angle between the level beam
and square beam is out of calibration if
the distance between points A and E is:
10 m
> 2,0 mm
20 m
> 4,0 mm
32‘10“
> 5/64 “
65‘8“
> 5/32 “
E1
E2
G1
G2
G3
G4
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