Bosch Professional GLL 50 G Original Instructions Manual page 17

– Mark the centre of the laser line on the upper edge of the door opening as point Ⅳ.
– The discrepancy d between the two marked points Ⅲ and Ⅳ reveals the actual ver-
tical deviation of the measuring tool.
– Measure the height of the door opening.
You can calculate the maximum permitted deviation as follows:
Doubled height of the door opening × 0.6 mm/m
Example: At a door opening height of 2 m, the maximum deviation amounts to
2 × 2 m × ±0.6 mm/m = ±2.4 mm. The points Ⅲ and Ⅳ must therefore be no further
than 2.4 mm from each other.
Working Advice
Only the centre of the laser line must be used for marking. The width of the laser
u
line changes depending on the distance.
Bosch Power Tools
– 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).
– Set up 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 way that its centre passes through
points Ⅰ and Ⅱ exactly.
1 609 92A 8K4 | (01.06.2023)
English | 17