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3
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 and near the plumb cone.
3.
Set up the product on a tripod or on a
fl at surface in front of the wall at a
distance of approximately 2 m.
Turn on the self-leveling mode, and
4.
press the button to project the vertical
beam towards the plumb line.
Turn the product so that the vertical
5.
beam will merge with the plumb line
below the hanging point.
Mark point a2 on the wall, in the
6.
middle of the vertical beam at the
same height as a1.
The distance between a1 and a2,
7.
should be no more than 1 mm.
22
ENGLISH
For sign-off review, sent 4 Aug 2023.
22
a1
a2
a1
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