17
5) The distance between
a1
and
a2
, should be no more
than 2 mm otherwise send the laser level to a qualified
technician for repair.
Checking the Accuracy of the Vertical line.
1) Hang an approximately 4 meter 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. (see figure 7).
3) Set up the laser on a tripod or on a flat surface in front
of the wall, at a distance of approximately 2 meters.
4) Unlock the pendulum and press the button to project the
vertical line toward the plumb line.
5) Turn the laser so that the vertical line will merge with the
plumb line below the hanging point.
a1 x
Figure # 7
approximately 4 m
