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Checking Square (Level to Square Beam 90° Calibration)
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 trans-
fer the level beam location to the floor.
5. Move the LA-4P 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-4P 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
The 90° angle between the level beam
points A and C
and square beam is out of calibration if
the distance between points A and E is:
10 m
20 m
3 3 2 2 ' '
9 1/2"
> 3/8"
> 11/16"
6 6 5 5 ' ' 7")
> 9,0 mm
> 18,0 mm
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Replacing the batteries
Slide the battery cover (4) in the direction of
the arrow and insert new batteries in
accordance with the symbols in the battery
compartment.
4 x 1,5V
alkaline mignoncells,
size AA, LR6
Tip:
Remove the batteries when storing the laser more than 30 days!
NB:
In Class II laser equipment, your eyes
are protected from accidental, short-
term exposure to the laser beam by
the lid-closing reflex and/or the reflex
reaction to turn one's head. This
equipment can therefore be used
without additional protective measu-
res. Nevertheless, you should not look
directly into the laser beam.
Do not let the unit fall into children's
hands!
EN 60825-1 : 03 10
The laser goggles enclosed with these
units are not safety goggles. They are desi-
gned to make the laser light easier to see.
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