> 9,0 mm (3/8 inch)
> 18,0 mm (3/4 inch)
14
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.
6. Mark the location of the square beam
(D) on the floor.
Turn the LA-4P 90° so that the level beam aligns with point D.
7.
Mark the location of the square beam (E) on the floor as
close as possible to point A.
8.
Measure the distance between points A and E.
9.
5. Move the LA-4P to point B and align
the level beam to point C again.
4. Mark a point (C) on the far wall or trans-
fer the level beam location to the floor.
To ensure accuracy, the distances from A to B, B to C,
and B to D should be equal.
Tip:
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 (35 ft)
20 m (70 ft)
Checking Level to Square Beam 90° Calibration
