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The maximum permitted deviation on the measuring distance of 2 ×
5
m =
10
m is as fol-
lows:
10
m × ±
0.3
mm/m = ±
3
mm. The discrepancy
d
between points
Ⅰ
and
Ⅲ
must therefore
amount to no more than
3
mm.
Checking the Level Accuracy of the Horizontal Line
For this check, you will need a free area of 5 ×
5
m.
– Mount the measuring tool in the middle between walls A and B on the holder or a tri-
pod, or place it on a firm, flat surface. Switch on the measuring tool with the auto-
matic levelling function enabled and select horizontal mode. Allow the measuring tool
to level in.
2,5 m
5,0 m
5,0 m
5,
0 m
5,0 m
A
B
– At a distance of 2.5 m from the measur-
ing tool, mark the centre of the laser line
on both walls (point
Ⅰ
on wall A and
point
Ⅱ
on wall B).
2,5 m
d
5,0 m
2,
5 m
5,
0 m
A
B
– Set up the measuring tool at a 5 m dis-
tance and rotated by 180° and allow it to
level in.
– Align the height of the measuring tool (using the tripod or by placing objects under-
neath as required) so that the centre of the laser line exactly hits the previously
marked point
Ⅱ
on wall B.
– Mark the centre of the laser line on wall A as point
Ⅲ
(vertically above or below
point
Ⅰ
).
Bosch Power Tools
1 609 92A 7AN | (14.12.2021)
Summary of Contents for GLL 2-10 Professional
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