Checking Plumb Accuracy - Milwaukee L4 CLL Manual Original

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CHECKING THE LEVEL ACCURACY OF THE VERTICAL
BEAM
1. Hang an approximately 4 m plumb
line on a wall.
2. After the plumb line has settled, mark
point a1 on the wall, behind the
plumb line, near the plumb cone.
3. Set up the cross laser on a tripod or
on a fl at surface in front of the wall at
a distance of approximately 2 m.
4. Switch ON the self-leveling mode,
and press the button to project the
vertical beam towards the plumb line.
5. Turn the cross laser so that the
vertical beam will merge with the
plumb line below the hanging point.
6. Mark point a2 on the wall, in the
middle of the vertical beam at the
same height as a1.
7. The distance between a1 and a2,
should be no more than 1 mm.
ENGLISH
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CHECKING PLUMB ACCURACY

This procedure requires a room of
with approx. 5m distance between
fl oor and ceiling.
1. Set up the cross laser on a
tripod.
2. Switch ON the self-leveling
mode and press the push
button to switch to the plump
function.
3. Mark the upper plumb dot on
the ceiling as point a1 (see the
illustration).
4. Mark the lower plumb dot on
the fl oor as point b.
a1
5. Rotate the laser level 180°,
position it so that the center of
the plumb dot is on the point b,
which has already been
marked, and allow it to level.
6. Mark the center of the upper
plumb dot on the ceiling as
point a2.
7. The distance between points
a1 and a2 marked on the
ceiling is an indication of the
actual deviation of the laser
level from the ideal plumb line.
If the measuring distance is
a2
5m, the maximum permissible
a1
deviation is:
5m x (+/- 0.6mm/m) x 2 = +/ - 6mm.
8. The distance between a1 and
a2, should not be more than
6 mm.
a1
b
a1 a2
180°
b
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