EN
9
EN
8
Checking the Accuracy of the side Vertical beam (#5)
For the second vertical beam, repeat the previous marking procedures from paragraph 1 -7.
Checking 90º accuracy between the 2 Vertical beams
This procedure requires a room of at least 5x5 meters with 3 walls.
1) Set up the laser on a table or on the floor in the middle of the room.
2) Unlock the pendulum and press the button Beam Selector (a) twice, to project the forward and the side
vertical beams
3) Mark the center of the side vertical beam in 3 places;
• Point a1 on the left wall A, in the middle of the vertical line.
• Point b1 on the right wall B, in the middle of the vertical line.
• Point c1 on the table, in the middle of the cross lines of the 2 verticals.
4) Mark the point c2 on the front wall C, in the middle of the vertical line (see figure # 7).
5) Rotate the laser 90° counterclockwise so that the cross beams pass through c1 on the table, and the
forward laser beam passes through the marks a1 and b1 on the walls A and B respectively.
6) Mark as c3 the center of the side vertical beam on wall C, at the same height as point c2. (see figure # 8 ).
7) The distance between c2 and c3, should be no more than 1.5mm, otherwise send the laser level to a
qualified technician for repair.
