21
4. Checking 90º accuracy between the 2 vertical beams.
This procedure requires a room of at least 5x5 meters with 4 walls.
1) Set up the laser on the table or on the floor in the middle of the room
2) Unlock the pendulum safety lock (#11), to project the forward
horizontal and vertical cross beams.
3) Press the
H
(#1) button to turn off the horizontal beam
4) Press the
V
(#2) button twice to project all 4 vertical
beams.
5) Project the forward vertical beam towards wall
A
.
(see figure #9).
# הנומת
9
Figure # 9
B
A
D
C
Approximately 5m
Approximately 5m
Figure # 9
