Bosch BL 200 GC Professional - Manual (Page 33)

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Bosch Power Tools 1 609 929 L80 | (26.7.07)
Work Examples
Note: For all work examples, with the exception
of “Contouring Gradients”, it is assumed that
the automatic levelling is switched on.
Projecting Height Points (see figure B)
Position the measuring tool in the horizontal po-
sition onto a firm support or mount it onto a tri-
pod 40 (accessory).
Working with tripod and receiver 38: In rotation-
al operation, align the laser beam to the re-
quired height and project the height at the tar-
get location.
Working without tripod: Using the measuring
plate 35, determine the height difference be-
tween the laser beam (in point or line opera-
tion) and the height line at the reference point.
Rotate the laser beam with the left 21 and right
24 direction pushbuttons to the target location
and project the measured height difference.
Parallel Aligning of a Plumb Beam
(see figure C)
When right angles are to be projected or when
partitions are to be aligned, the plumb beam 8
must be aligned 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 plumb beam runs approximately parallel to
the reference line.
For the exact positioning, measure the distance
between the plumb beam and the reference line
directly at the measuring tool, using the measur-
ing plate 35. Now, measure the distance again
between the plumb beam and the reference line
with the distance as far as possible away from
the measuring tool. Using the left 21 and right
24 direction pushbuttons, align the plumb beam
in such a manner that it has the same distance
to the reference line as measured directly at the
measuring tool.
Centring a Rotational Plane over a Floor Point
(see figure D)
When right angles are to be projected from a de-
fined floor point, the rotational plane must be
centred over this reference point.
Set up the measuring tool in the vertical posi-
tion as close as possible over the reference
point and select point operation.
Using the upper 20 and lower 23 direction push-
buttons, rotate the variable laser beam in such a
manner that it is pointed downward to the floor.
With the spirit level 1 at the rotor head, align the
laser beam exactly vertical.
f
Make sure that the variable laser beam is
pointed downward before viewing at the
spirit level 1 from above. This will avoid
looking directly into the laser beam.
Position the measuring tool in such a manner
that the vertical laser beam precisely meets the
reference point.
Projecting Right Angles (see figure E)
When the measuring tool is in the vertical posi-
tion, the right angle is indicated by means of the
plumb beam 8 and the variable laser beam 9.
If required, centre the rotational plane over a
floor point and align the plumb beam 8 parallel
to a reference line (e.g. a wall) in order to
project right angles.
Marking Plumb Lines (see figure F)
Set up the measuring tool in the vertical posi-
tion and align the variable laser beam 9 to the lo-
cation at which the plumb line is to be marked.
Select line or rotational operation and mark the
plumb line.
Marking Vertical Planes (see figure F)
Set up the measuring tool in the vertical posi-
tion. Bring the variable laser into alignment with
a reference line (e.g. a partition). Select line or
rotational operation and mark the vertical plane.
OBJ_BUCH-78-004.book Page 33 Thursday, July 26, 2007 2:04 PM