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A
d
– The discrepancy d between the two marked points Ⅰ and Ⅲ on wall A reveals the ac-
tual height deviation of the measuring tool.
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 Levelling Accuracy of the Vertical Lines
For this check, you will need a door opening (on solid ground) which has at least 2.5 m of
space either side of the door.
– Place the measuring tool 2.5 m away from the door opening on a firm, flat surface (not
on a tripod). Switch on the measuring tool and the vertical laser line at the front of the
measuring tool.
Bosch Power Tools
– Turn the measuring tool 180° without
adjusting the height. Aim it at wall A
B
180°
such that the vertical laser line runs
through the already marked point Ⅰ. Al-
low the measuring tool to level in and
mark the point where the laser lines
cross on wall A (point Ⅲ).
– Mark the centre of the vertical laser line
on the floor of the door opening
(point Ⅰ), 5 m away on the other side of
the door opening (point Ⅱ) and on the
upper edge of the door opening
(point Ⅲ).
English | 47
1 609 92A 8JB | (08.12.2023)
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