5
ACCURACY FIELD CHECK
NOTICE
Perform the Accuracy Field Check
procedure immediately upon unboxing
of each new Laser Level and before exposure to
jobsite conditions. See "Accuracy Field Check"
for information.
Should any deviation from listed
product accuracy be found, please con-
tact a MILWAUKEE service facility. Failure to do so
could result in rejection of warranty claim.
Influences on Accuracy
Ambient temperature gradients can impact laser
accuracy. For accurate and repeatable results, the
following procedure should be conducted with the
laser elevated off the ground and placed in the center
of the working area.
Abusive treatment of the Laser Level, such as exces-
sive impacts from drop, can also lead to deviations
in product accuracy.
Therefore, it is recommended to conduct the Field
Check procedure after any impact or before complet-
ing any critical jobs.
Horizontal Height Accuracy
A free measuring distance of approximately 66' on a
firm surface between two walls or structures A and
B is required for this check.
It is also suggested to mount the Laser Level to a
Tripod for easy adjustment.
1. Securely mount the tool within 1' of wall A.
66'
1'
A
B
2. Turn the tool to ON. Turn on Horizontal Plane
and Side Vertical Plane.
3. Direct the front laser beams against the nearest
wall A and allow to self-level. Mark the center of
where the horizontal and vertical lines cross on
the wall (point I).
4.
Rotate the tool 180° without changing the height,
allow it to self-level, and mark the center of where
the horizontal and vertical lines cross on the op-
posite wall B (point II).
A
B
180
5. Move the tool within 1' of wall B. Turn the tool
to ON. Turn on Horizontal Plane and Side
Vertical Plane. Align intersection of the horizontal
and vertical lines in the general direction of point
II on wall B.
A
B
1'
6. Adjust the height of the tool (using the tripod or by
adding shims, if required) such that the intersection
of the vertical and horizontal lines are projected
exactly against the previously marked 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 intersection of
the laser lines on wall A (point III). Point III should
be aligned as vertically above or below point I on
wall A as possible.
BB
180
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".
