Bosch GLL 2-80 P 0601063200 User Manual

Product codes
0601063200
Page of 302
 English | 21
Bosch Power Tools
1 609 929 S04 | (30.6.09)
Checking the Levelling Accuracy of the 
Vertical Line
For this check, a door opening is required with 
at least 2.5 metres 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. Allow the measuring tool 
to level in while in vertical operation with au-
tomatic levelling, and direct the laser beam 
at the door opening.
– Mark the centre of the vertical laser line at 
the floor of the door opening (point I), at a 
distance of 5 metres beyond the other side of 
the door opening (point II) and at the upper 
edge of the door opening (point III).
– Rotate the measuring tool by 180° and posi-
tion it 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.
– Mark the centre of the laser line at the upper 
edge of the door opening as point IV.
– The difference d of both marked points III 
and IV results in the actual deviation of the 
measuring tool to the plumb line.
– Measure the height of the door opening.
The maximum admissible deviation is calculated 
as follows:
Doubled height of the door opening x 0.2 mm/m
Example: For a door-opening height of 2 m, the 
maximum deviation may be
2 x 2 m x ±0.2 mm/m = ±0.8 mm. Consequently, 
points III and IV may be no more than 0.8 mm 
(max.) apart from each other.
Working Advice
f
Always use the centre of the laser line for 
marking. 
The width of the laser line changes 
with the distance.
Working with the laser target plate
The laser target plate 15 increases the visibility 
of the laser beam under unfavourable condi-
tions and at large distances.
The reflective part of the laser target plate 15 
improves the visibility of the laser line. Thanks 
to the transparent part, the laser line is also vis-
ible from the back side of the laser target plate.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable meas-
uring support. Position the measuring tool with 
the 1/4" tripod mount 10 onto the thread of the 
tripod 21 or a commercially available camera tri-
pod. For fastening to a commercially available 
construction tripod, use the 5/8" tripod mount 
9. Tighten the measuring tool with the tripod 
mounting stud.
Fastening with the Universal Holder 
(Accessory) (see figure D)
With the universal holder 19, you can fasten the 
measuring tool, e.g., to vertical surfaces, pipes 
or magnetizable materials. The universal holder 
is also suitable for use as a ground tripod and 
makes the height adjustment of the measuring 
tool easier.
2,5 m
2,5 m
2 m
d
OBJ_BUCH-907-001.book  Page 21  Tuesday, June 30, 2009  2:32 PM