English |
15
Bosch Power Tools
1 609 92A 0KH | (28.4.14)
– Mark the centre of the laser line as point
III
(vertically
above or below point
I
) on the wall A.
– The difference
d
of both marked points
I
and
III
on wall A
indicates the actual deviation of the measuring tool from
the level plane.
The maximum permitted deviation d
max
is calculated as
follows:
d
max
= double distance of the walls x 0.3 mm/m
Example: With a 5 metre distance between the walls, the max-
imum deviation must not exceed
d
max
= 2 x 5 m x 0.3 mm/m = 3 mm. Thus, the marks must not
be more than 3 mm apart.
Checking the Levelling Accuracy of the Vertical Line
For this check, a door opening is required with at least 2.5 m
of space (on a firm surface) to each side of the door.
– Position the measuring tool on a firm, level surface (not on
a tripod) 2.5 m away from the door opening. Direct the la-
ser beams at the door opening and allow the measuring
tool to level in.
– Mark the centre of the vertical laser line at the floor of the
door opening (point
I
), at a distance of 5 m beyond the
other side of the door opening (point
II
) and at the upper
edge of the door opening (point
III
).
– Position the measuring tool on the other side of the door
opening directly behind point
II
. Allow the measuring tool
to level in and align the vertical laser line in such a manner
that its centre runs exactly through points
I
and
II
.
– The difference
d
between point
III
and the centre of the la-
ser line at the upper edge of the door opening results in the
actual deviation of the measuring tool from the vertical
plane.
– Measure the height of the door opening.
The maximum permitted deviation d
max
is calculated as
follows:
d
max
= double height of the door opening x 0.3 mm/m
Example: With a door opening height of 2 metres, the maxi-
mum permitted deviation is d
max
= 2 x 2 m x 0.3 mm/m
= 1.2 mm. Thus, the marks must not be more than 1.2 mm
apart.
Working Advice
Always use the centre of the laser line for marking.
The
width of the laser line changes with the distance.
Attaching with the Holder
To fasten the measuring tool on the holder
10
, screw the lock-
ing screw
11
of the holder into the 1/4" tripod mount
2
on the
measuring tool and tighten. To rotate the measuring tool on
the holder, slightly loosen the screw
11
.
With the holder
10
, the measuring tool can be attached as
follows:
– Mount the holder
10
to the tripod
18
or a commercially
available camera tripod via the 1/4" tripod mount
15
. For
fastening to a commercially available construction tripod,
use the 5/8" tripod mount
16
.
– The holder
10
can be fastened to steel parts via the
magnets
14
.
– The holder
10
can be fastened to drywalls or wood walls
with screws. For this, insert screws with a minimum length
of 50 mm into the screw holes
12
of the holder.
– The holder
10
can also be fastened to pipes or similar
beams using a commercially available strap by threading it
through the opening
13
for strap attachment.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable measuring support.
Place the measuring tool via the tripod mount
2
onto the 1/4"
male thread of the tripod and screw the locking screw of the
tripod tight.
Working with the Measuring Plate (Accessory)
(see figures G
–
H)
With the measuring plate
22
, 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
required height can be measured 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 meas-
uring plate.
2,5 m
2,5 m
2,5 m
2,5 m
2,5 m
2,5 m
d
2 m
OBJ_BUCH-2049-002.book Page 15 Monday, April 28, 2014 4:59 PM
