Bosch GRL 400 H Professional Original Instructions Manual page 25

OBJ_BUCH-1179-001.book Page 25 Thursday, August 5, 2010 10:04 AM
Working with the Measuring Plate (Accessory)
With the measure-
ment plate 22, you can
project the laser
height onto a wall.
With the zero field and
30 mm
the scale, the offset or
drop to the required
height can be meas-
ured and projected at
another location. This eliminates the necessity
of precisely adjusting the measuring tool to the
height to be projected.
The measuring plate 22 has a reflective coating
that enhances the visibility of the laser beam at
greater distances or in intense sunlight. The
brightness intensification can be seen only
when viewing, parallel to the laser beam, onto
the measuring plate.
Working with the Measuring Rod (Accessory)
For checking irregularities or projecting gradi-
ents, it is recommended to use the measuring
rod 19 together with the laser receiver.
A relative millimeter scale (±50 cm) is marked
on the top of the measuring rod 19. Its zero
height can be preset at the bottom of the eleva-
tor column. This allows for direct reading of de-
viations from the specified height.
Bosch Power Tools
Work Examples
Checking the Depth of Building Pits
(see figure A)
Position the measuring tool on a firm surface or
mount it to a tripod 18.
Working with tripod: Align the laser beam to the
requested height. Project or check the height at
the target location.
Working without tripod: Determine the height
difference between the laser beam and the
height at the reference point with help of the
measurment plate 22. Project or check the meas-
ured height difference at the target location.
When measuring over long distances, the meas-
uring tool should always be set up in the centre
of the work surface and on a tripod, in order to
reduce interferences.
When working on unsafe ground, mount the
measuring tool onto the tripod 18. Take care
that the shock-warning function is activated, in
order to avoid faulty measurements in case of
ground vibrations or shock to the measuring
tool.
English | 25
2 610 A13 330 | (5.8.10)