Bosch Professional GRL 350 HV Instructions Manual page 17

Do not use the laser goggles (accessory) as protective
u
goggles. The laser goggles make the laser beam easier to
see; they do not protect you against laser radiation.
Do not use the laser goggles (accessory) as
u
sunglasses or while driving. The laser goggles do not
provide full UV protection and impair your ability to see
colours.
Example applications
Projecting/checking heights (see figure D)
Position the measuring tool in the horizontal position on a
firm support or mount it on a tripod (39) (accessory).
Working with a tripod: Set the laser beam at the required
height. Project or check the height at the target location.
Working without a tripod: Determine the height difference
between the laser beam and the height at the reference
point using the laser target plate (47). Project or check the
height difference measured at the target location.
Parallel Alignment of Upwards Plumb Point/Projecting
Right Angles (see figure E)
When right angles are to be projected or partition walls are
to be aligned, the upwards plumb point (11) must be aligned
in parallel, meaning at the same distance to a reference line
(e.g. a wall).
For this, set up the measuring tool in the vertical position
and position it in such a manner that the upwards plumb
point runs approximately parallel to the reference line.
For the exact positioning, measure the clearance between
the upwards plumb point and reference line directly on the
measuring tool using the laser target plate (47). Measure the
clearance between the upwards plumb point and reference
line again as far away as possible from the measuring tool.
Align the upwards plumb point in such a manner that it has
the same clearance to the reference line as when measured
directly at the measuring tool.
The right angle to the upwards plumb point (11) is indicated
by the variable laser beam (8).
Indicating a perpendicular/vertical plane (see figure F)
To indicate a perpendicular or a vertical plane, set up the
measuring tool in the vertical position. When the vertical
Overview of Indications
Switching on the measuring tool (1 s
self-check)
Sleep mode
Levelling
Levelling in
Re-levelling
Self-levelling range exceeded
Bosch Power Tools
plane is supposed to run at a right angle to a reference line
(e.g. a wall), align the upwards plumb point (11) with this
reference line.
The perpendicular plane is indicated by the variable laser
beam (8).
Aligning a Perpendicular/Vertical plane (see figure G)
To align the vertical laser line or the rotational plane against
a reference point on a wall, set up the measuring tool in the
vertical position, and roughly align the laser line or the rota-
tional plane with the reference point. For precise alignment
with the reference point, turn the rotational plane around the
X-axis (see "Turning the Rotational Plane When In the Ver-
tical Position", page 12).
Working without the Laser Receiver (see figure H)
Under favourable light conditions (dark environment) and
for short distances, it is possible to work without the laser
receiver. For improved visibility of the laser beam, either se-
lect line operation or point operation and rotate the laser
beam to the target location.
Working with the Laser Receiver (see figure I)
In unfavourable lighting conditions (bright environment, dir-
ect sunlight) and for larger distances, use the laser receiver
to improve detection of the laser beam (37). When working
with the laser receiver, select rotational operation with the
highest rotational speed.
Measuring over Long Distances (see figure J)
When measuring over long distances, the laser receiver (37)
must be used to find the laser beam. In order to reduce inter-
ferences, the measuring tool should always be set up in the
centre of the work surface and on a tripod.
Working outdoors (see figure C)
The laser receiver (37) should always be used when working
outdoors.
When working on unstable ground, mount the measuring
tool on the tripod (39). Always work with the shock-warning
function activated in order to avoid faulty measurements in
case of ground movements or shocks to the measuring tool.
Laser beam Rotation of
the laser
A)
beam
Green
○ ○
✴ ○ ✴
○ ○
✴
○ ○
X Y
Red Green Red Red
3×/s 3×/s 3×/s
1×/s 1×/s 1×/s
✴
✴
✴ ✴
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English | 17
Red
3×/s
1×/s