Example Applications - Bosch GRL 250 HV Professional Originalbetriebsanleitung

24 | English
Fasten the wall mount (36) either to a wall using screws
through the fixing holes (34) or to a strip of wall using the
fastening screw (33). Fit the wall mount as perpendicular as
possible to the wall and ensure it is mounted in a stable way.
Mounting on a tripod: You can also screw the wall
mount (36) on to a tripod (35) using the tripod mount on
the back. This type of mount is particularly suited to work
where the rotation level is supposed to be aligned to a refer-
ence line.
You can use the alignment unit to slide the measuring tool
vertically (if mounted on the wall) or horizontally (if mounted
on a tripod) up to approx. 16 cm. To do this, loosen the
bolt (37) on the alignment unit, slide the measuring tool into
the required position, and retighten the bolt (37).
Working with the Laser Receiver (accessory)
Use the laser receiver (30) to improve detection of the laser
lines in adverse lighting conditions (bright environment, dir-
ect sunlight) and over greater distances.
For rotary lasers with multiple operating modes, select the
horizontal or vertical operation with the highest rotational
speed.
Before working with the laser receiver, read and observe the
laser receiver operating instructions.
Working with the Remote Control
When pressing the operating controls, it is possible to bring
the measuring tool out of its level position, so that the rota-
tion is briefly interrupted. This effect is avoided when using
the remote control.
Sensors (7) for the remote control are located on three sides
of the measuring tool, including above the control panel on
the front.
Working with the measuring rod (accessory)
(see figure E)
To check levels or apply slopes, it is recommended to use
the measuring rod (31) together with the laser receiver.
A relative measuring scale is incorporated at the top of the
measuring rod (31). You can preselect its zero at the bottom
on the extender. This enables you to read deviations from
the target height straight away.
Laser Goggles (Accessory)
The laser goggles filter out ambient light. This makes the
light of the laser appear brighter to the eye.
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 F)
Position the measuring tool in the horizontal position on a
firm support or mount it on a tripod (32) (accessory).
1 609 92A 7AR | (07.02.2022)
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 (41). Project or check the
height difference measured at the target location.
Parallel Alignment of Upwards Plumb Point/Projecting
Right Angles (see figure G)
When right angles are to be projected or partition walls are
to be aligned, the upwards plumb point (9) 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 (41). 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 (9) is indicated
by the variable laser beam (6).
Indicating a perpendicular/vertical plane (see figure H)
To indicate a perpendicular or a vertical plane, set up the
measuring tool in the vertical position. When the vertical
plane is supposed to run at a right angle to a reference line
(e.g. a wall), align the upwards plumb point (9) with this ref-
erence line.
The perpendicular plane is indicated by the variable laser
beam (6).
Aligning a Perpendicular/Vertical plane (see figure I)
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
vertical axis (see " Turning the Rotational Plane
when in the Vertical Position (see figure B)", page 22).
Working without the Laser Receiver (see figure J)
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 K)
In unfavourable lighting conditions (bright environment, dir-
ect sunlight) and for larger distances, use the laser receiver
to improve detection of the laser beam (30). When working
with the laser receiver, select rotational operation with the
highest rotational speed.
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