Bosch Professional GLL 2 - Working Advice and Tripod Use

18 | English
2 m
d
– Rotate the measuring tool 180° and position it on the other side of the
door opening, directly behind point. Allow the measuring tool to level in
and align the vertical laser line in such a way that its centre passes
through points and exactly.
– Mark the centre of the laser line on the upper edge of the door opening as
point.
– The discrepancy d between the two marked points and  reveals the
actual vertical 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×0.5mm/m
Example: At a door opening height of 2m, the maximum deviation amounts
to
2×2m×±0.5mm/m=±2mm. The points and  must therefore be no
further than 2mm from each other.
Working Advice
u Only the centre of the laser line must be used for marking. The width
of the laser line changes depending on the distance.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface for measuring.
Place the measuring tool with the 1/4" tripod mount (12) on the thread of
1 609 92A 58R | (04.03.2020) Bosch Power Tools