Bosch BL 200 GC Professional - Manual (Page 31)

English | 31
Bosch Power Tools 1 609 929 L80 | (26.7.07)
–
After levelling, direct the laser beam in point
operation onto the close wall A. Mark the
centre point of the laser beam on the wall
(point I).
–
Turn the measuring tool around by 180°,
allow it to level in and mark the centre point
of the laser beam on the opposite wall B
(point II).
– Without turning the measuring tool, position
it close to wall B. Switch the measuring tool
on and allow it to level in.
–
Align the height of the measuring tool (using
the tripod or by underlaying, if required) in
such a manner that the centre point of the la-
ser beam is projected exactly against the pre-
viously marked point II on wall B.
–
Without altering the height, turn the measur-
ing tool around by 180°. Allow the measuring
tool to level in and mark the centre point of
the laser beam on the wall A (point III).
– The difference d of both marked points I and
III
on wall A amounts to the actual deviation
of the measuring tool for the measured axis.
Repeat the measuring procedure for the other
three axes. For this, turn the measuring tool pri-
or to each measuring procedure by 90°.
On the measuring distance of 2 x 20 = 40 m, the
maximum deviation may not exceed
± 2 mm.
Consequently, the highest and lowest mark may
not be further apart than 4 mm (maximum).
If the measuring tool should exceed the maxi-
mum deviation in anyone of the four measuring
procedures, have it checked at a Bosch after-
sales service agent.
Operating Instructions
f Always use the centre of the laser point for
marking. The size of the laser point changes
with the distance.
Laser viewing glasses (Accessory)
The laser viewing glasses filter out the ambient
light. This makes the red light of the laser ap-
pear brighter for the eyes.
f
Do not use the laser viewing glasses as safe-
ty goggles. The laser viewing glasses are used
for better recognition of the laser beam and
thus do not protect against laser radiation.
f Do not use the laser viewing glasses as sun
glasses or in traffic. The laser viewing glass-
es do not afford complete UV protection and
reduce colour perception.
OBJ_BUCH-78-004.book Page 31 Thursday, July 26, 2007 2:04 PM