Working Advice - Bosch GCL 25 Professional Originalbetriebsanleitung

OBJ_BUCH-1546-003.book Page 15 Wednesday, May 14, 2014 4:32 PM
A
180°
– Turn the measuring tool around by 180°, allow it to level in
and mark the centre point of the laser beam on the oppo-
site 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.
A
– Align the height of the measuring tool (using the tripod or
by underlaying, if required) in such a manner that the cen-
tre point of the laser beam is projected exactly against the
previously marked point II on wall B.
A
d
– Rotate the measuring tool by 180° without changing the
height. Allow it to level in and mark the centre point of the
laser beam on wall A (point III). Take care that point III is
as vertical as possible above or below point I.
– The difference d of both marked points I and III on wall A
results in the actual height deviation of the measuring tool
alongside the longitudinal axis.
On the measuring distance of 2 x 20 m = 40 m, the maximum
allowable deviation is: 40 m x ±0,3 mm/m = ±12 mm.
Thus, the difference d between points I and III may not
exceed 12 mm (max.).
Bosch Power Tools

Working Advice

 For marking, always use only the centre of the laser
B
point or the laser line. The size of the laser point as well as
the width of the laser line change with distance.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable measuring support.
Position the measuring tool with the 1/4" tripod mount 7 onto
the thread of the tripod 16 or a commercially available cam-
era tripod. For fastening to a commercially available construc-
tion tripod, use the 5/8" tripod mount 6. Tighten the measur-
ing tool with the tripod mounting stud.
Adjust the tripod roughly before switching on the measuring
tool.
Fastening with the Universal Holder (Accessory)
With the universal holder 15, you can fasten the measuring
tool, e.g., to vertical surfaces, pipes or magnetizable materi-
als. The universal holder is also suitable for use as a ground
B
tripod and makes the height adjustment of the measuring tool
easier.
Adjust the universal holder roughly before 15 switching on
the measuring tool.
Working with the Measuring Plate (Accessory)
(see figures A–B)
With the measuring plate 14, it is possible to project the laser
mark onto the floor or the laser height onto a wall.
With the zero field and the scale, the offset or drop to the re-
quired height can be measured and projected at another loca-
tion. This eliminates the necessity of precisely adjusting the
measuring tool to the height to be projected.
The measuring plate 14 has a reflective coating that enhances
the visibility of the laser beam at greater distances or in
B
180°
intense sunlight. The brightness intensification can be seen
only when viewing, parallel to the laser beam, onto the meas-
uring plate.
Working with the Laser Target Plate
The laser target plate 13 increases the visibility of the laser
beam under unfavourable conditions and at large distances.
The reflective part of the laser target plate 13 improves the
visibility of the laser line. Thanks to the transparent part, the
laser line is also visible from the back side of the laser target
plate.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out the ambient light. This
makes the red light of the laser appear brighter for the eyes.
 Do not use the laser viewing glasses as safety goggles.
The laser viewing glasses are used for improved visualisa-
tion of the laser beam, but they do not protect against laser
radiation.
 Do not use the laser viewing glasses as sun glasses or in
traffic. The laser viewing glasses do not afford complete
UV protection and reduce colour perception.
English | 15
1 609 92A 0KZ | (14.5.14)