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5. Move the tool within 0.3 m of wall B. Allow the
laser to self level. Align the laser cross in the
general direction of point II on wall B.
A
Adjust the height of the tool (using the tripod or
6.
by adding shims, if required) to align the laser
cross directly onto point II on wall B. Allow the
tool to self-level.
7.
Rotate the tool 180° without changing the
height, allow it to self-level, and mark the centre
of the laser cross on wall A (point III). Point III
should be aligned as vertically above or below
point I on wall A as possible.
A
d
The distance between points I and III on wall A is
8.
the height deviation (d) of the tool. This distance
should
not
exceed
10 m (12.8 mm at 40 m).
For the Measuring distance of 2 x 20 m = 40 m,
the maximum allowable deviation (d) is:
40 m x ±3.2 mm ÷ 10 m = ±12.8 mm.
Horizontal Leveling Accuracy
A
free
measuring
10 m x 10 m on a firm surface between two walls or
structures A and B is required for the check.
It is also suggested to mount the Laser Level to a
Tripod for easy adjustment.
Securely mount the tool on one side of the room
and centred between walls A and B. Direct the laser
lines toward the other side of the room such that the
horizontal line appears on both walls A and B. Allow
the laser to Self-Level.
0.3 m
180
3.2
mm
(max.)
space
of
approximately
1. Turn the tool to
2. At a distance of 5 m from the laser, mark the
centre of the horizontal line on Wall A (Point I). Do
the same on Wall B (Point II).
B
A
3. Move the Laser 10 m toward the opposite wall
and rotate the laser 180°. Allow the laser to
Self-Level.
4. Adjust the height of the tool (using the tripod or by
adding shims, if required) such that the centre of
the horizontal line is projected exactly against the
previously marked point II on wall B. Ensure the
B B
B
Laser is self-leveled after alignment.
5. Mark the centre of horizontal line on wall A
(point III). Take care that point III is aligned as
vertical as possible above or below point I.
6. The distance d between marked points I and III on
wall A indicates the actual deviation (d) of the tool.
A
at
7. For the Measuring distance of 2 x 10 m = 20 m,
the
maximum
20 m x ±3.2 mm ÷ 10 m = ±6.4 mm. Thus, the
difference d between points I and III should not
exceed 6.4 mm (max.) at 20 m.
5
ON.
B
B
allowable
deviation
(d)
is:
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