RGK LP-62, Manual

Page: 9 / 12

9
Level accuracy check
Horizontal line accuracy check
Find a room with a distance of 5 meters between the walls.
Place the device on a tripod in the middle between the walls.
Turn on the horizontal beam and point it at the wall and mark
point a1 on wall A.
Turn the device 180 ° and mark point b1 on wall B. Move
the tripod with the device so that it is at a distance of 60 cm
from wall A, re-mark points a2 and b2. Measure the distance
between a1 and a2 and between b1 and b2. If the difference
(a2-a1) - (b2-b1)> 1.5 mm, contact the service center.