Working Advice - Bosch GLL 2-15 Professional Manual Original

OBJ_BUCH-2049-003.book Page 15 Wednesday, January 27, 2016 12:50 PM
A
B
– Set up the measuring tool 5 metres away turned by 180°
and allow it to level in.
– Align the height of the measuring tool (using a tripod or by
underlaying, if required) in such a manner that the centre
of the laser line is projected exactly against the previously
marked point II on wall B.
– Mark the centre of the laser line as point III (vertically
above or below point I) on the wall A.
– The difference d of both marked points I and III on wall A
indicates the actual deviation of the measuring tool from
the level plane.
The maximum permitted deviation d
lows:
d = double distance of the walls x 0.3 mm/m
max
Example: With a 5 metre distance between the walls, the max-
imum deviation must not exceed
d = 2 x 5 m x 0.3 mm/m = 3 mm. Thus, the marks must not
max
be more than 3 mm apart.
Checking the Levelling Accuracy of the Vertical Line
For this check, a door opening is required with at least 2.5 m
of space (on a firm surface) to each side of the door.
– Position the measuring tool on a firm, level surface (not on
a tripod) 2.5 m away from the door opening. Direct the la-
ser beams at the door opening and allow the measuring
tool to level in.
Bosch Power Tools
– Mark the centre of the vertical laser line at the floor of the
door opening (point I), at a distance of 5 m beyond the
other side of the door opening (point II) and at the upper
edge of the door opening (point III).
– Position the measuring tool on the other side of the door
opening directly behind point II. Allow the measuring tool
to level in and align the vertical laser line in such a manner
that its centre runs exactly through points I and II.
– The difference d between point III and the centre of the la-
ser line at the upper edge of the door opening results in the
actual deviation of the measuring tool from the vertical
plane.
is calculated as fol-
– Measure the height of the door opening.
max
The maximum permitted deviation d
lows:
d
max
Example: With a door opening height of 2 metres, the maxi-
mum permitted deviation is
d
max
not be more than 1.2 mm apart.

Working Advice

 Always use the centre of the laser line for marking. The
width of the laser line changes with the distance.
Attaching with the Holder
To fasten the measuring tool on the holder 10, screw the lock-
ing screw 11 of the holder into the 1/4" tripod mount 2 on the
measuring tool and tighten. To rotate the measuring tool on
the holder, slightly loosen the screw 11.
With the holder 10, the measuring tool can be attached as fol-
lows:
– Mount the holder 10 to the tripod 18 or a commercially
available camera tripod via the 1/4" tripod mount 15. For
fastening to a commercially available construction tripod,
use the 5/8" tripod mount 16.
– The holder 10 can be fastened to steel parts via the mag-
nets 14.
– The holder 10 can be fastened to drywalls or wood walls
with screws. For this, insert screws with a minimum length
of 50 mm into the screw holes 12 of the holder.
– The holder 10 can also be fastened to pipes or similar
beams using a commercially available strap by threading it
through the opening 13 for strap attachment.
max
= double height of the door opening x 0.3 mm/m
= 2 x 2 m x 0.3 mm/m = 1.2 mm. Thus, the marks must
1 609 92A 25H | (27.1.16)
English | 15
is calculated as fol-