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5. Move the tool within 1' of wall B. Allow the laser
to self level. Align the laser cross in the general
direction of point II on wall B.
A
6. Adjust the height of the tool (using the tripod or
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 center 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
8. The distance between points I and III on wall A is
the height deviation (d) of the tool. This distance
should not exceed 1/8" (max.) at 33' (1/2" at 132').
For the Measuring distance of 2 x 66' = 132', the
maximum allowable deviation (d) is: 132' x ±1/8"
÷ 33' = ±1/2".
A free measuring space of approximately 33'x33' 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.
B
Securely mount the tool on one side of the room and
centered 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.
1. Turn the tool to
2. At a distance of 16.5' from the laser, mark the
1'
B
B
180
3. Move the Laser 33' toward the opposite wall and
4. Adjust the height of the tool (using the tripod or
5. Mark the center of horizontal line on wall A (point
6. The distance d between marked points I and III on
7. For the Measuring distance of 2 x 33' = 66', the
5
Horizontal Leveling Accuracy
ON.
center of the horizontal line on Wall A (Point I).
Do the same on Wall B (Point II).
A
rotate the laser 180°. Allow the laser to Self-Level.
by adding shims, if required) such that the center
of the horizontal line is projected exactly against
the previously marked point II on wall B. Ensure
the Laser is self-leveled after alignment.
III). Take care that point III is aligned as vertical
as possible above or below point I.
wall A indicates the actual deviation (d) of the tool.
A
maximum allowable deviation (d) is: 66' x ±1/8" ÷
33' = ±1/4". Thus, the difference d between points
I and III should not exceed 1/4" (max.) at 66'.
B
B
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