English |
21
Bosch Power Tools
1 609 929 S02 | (19.3.09)
– Without turning the measuring tool, position
it close to wall B. Switch the measuring tool
on and allow it to level in.
– Align the height of the measuring tool (using
a tripod or by underlaying, if required) in
such a manner that the cross point of the la-
ser lines is projected against the previously
marked point
II
on the wall B.
– Without changing the height, turn around the
measuring tool by 180°. Direct it against the
wall A in such a manner that the vertical laser
line runs through the already marked point
I
.
Allow the measuring tool to level in and mark
the cross point of the laser lines on the wall
A (point
III
).
– The difference
d
of both marked points
I
and
III
on wall A indicates the actual height devi-
ation of the measuring tool.
The maximum permitted deviation d
max
is cal-
culated as follows:
d
max
= double distance of the walls x 0.3 mm/m
Example: With a 5 metre distance between the
walls, the maximum 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 Horizontal Line
For the check, a free surface of approx.
5 x 5 metres is required.
– Set up the measuring tool on a firm, level sur-
face between both walls A and B. Allow the
measuring tool to level in while in horizontal
operation.
– At a distance of 2.5 metres from the measur-
ing tool, mark the centre of the laser line
(point
I
on wall A and point
II
on wall B) on
both walls.
– Set up the measuring tool 5 metres away
turned by 180° and allow it to level in.
– Align the height of the measuring tool (using a
tripod or by underlaying, if required) in such a
manner that the centre of the laser line is pro-
jected exactly against the previously marked
point
II
on wall B.
A
B
d
180˚
A
B
2,5 m
,0 m
5,
5
A
B
d
2,5 m
A
B
OBJ_BUCH-817-004.book Page 21 Thursday, March 19, 2009 12:32 PM
