Working Advice - Bosch GLL 2-10 Professional Originalbetriebsanleitung

16 | English
A
– Set up the measuring tool at a 5 m distance and rotated
by 180° and allow it to level in.
– Align the height of the measuring tool (using the tripod or
by placing objects underneath as required) so that the
centre of the laser line exactly hits the previously marked
point Ⅱ on wall B.
– Mark the centre of the laser line on wall A as point Ⅲ (ver-
tically above or below point Ⅰ).
– The discrepancy d between the two marked points Ⅰ and
Ⅲ on wall A reveals the actual horizontal deviation of the
measuring tool.
The maximum permitted deviation on the measuring dis-
tance of 2 × 5 m = 10 m is as follows:
10 m × ±0.3 mm/m = ±3 mm. The discrepancy d between
points Ⅰ and Ⅲ must therefore amount to no more than
3 mm.
Checking the Level Accuracy of the Vertical Line
For this check, you will need a door opening (on solid
ground) which has at least 2.5 m of space either side of the
door.
– Place the measuring tool 2.5 m away from the door open-
ing on a firm, flat surface (not on a tripod). Switch on the
measuring tool in the mode with automatic levelling. Se-
lect vertical mode and allow the measuring tool to level in.
1 609 92A 4HJ | (20.03.2020)
B
– Mark the centre of the vertical laser line on the floor of the
door opening (point Ⅰ), 5 m away on the other side of the
door opening (point Ⅱ) and on the upper edge of the door
opening (point Ⅲ).
– Set up 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
way that its centre passes through points Ⅰ and Ⅱ exactly.
– Mark the centre of the laser line on the upper edge of the
door opening as point Ⅳ.
– The discrepancy d between the two marked points Ⅲ and
Ⅳ reveals the actual vertical deviation of the measuring
tool.
– Measure the height of the door opening.
You can calculate the maximum permitted deviation as fol-
lows:
Doubled height of the door opening × 0.3 mm/m
Example: At a door opening height of 2 m, the maximum de-
viation amounts to
2 × 2 m × ±0.3 mm/m = ±1.2 mm. The points Ⅲ and Ⅳ
must therefore be no further than 1.2 mm from each other.

Working Advice

Only the centre of the laser line must be used for
u
marking. The width of the laser line changes depending
on the distance.
Working with the Laser Target Plate
The laser target plate (20) improves visibility of the laser
beam in unfavourable conditions and at greater distances.
The reflective half of the laser target plate (20) improves vis-
ibility of the laser line. The transparent half enables the laser
line to be seen from behind the laser target plate.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface
for measuring. Place the measuring tool with the 1/4" tripod
mount (5) on the thread of the tripod (23) or a conventional
camera tripod. Use the 5/8" tripod mount (4) to secure the
measuring tool on a conventional building tripod. Tighten the
measuring tool using the locking screw of the tripod.
Roughly align the tripod before switching on the measuring
tool.
Bosch Power Tools