Bosch Professional GLL 2 - Checking Vertical Line Level Accuracy

English | 17
– Mark the centre of the laser line on wallA as point (vertically above or
below point).
– The discrepancy d between the two marked points and  on wallA re-
veals the actual horizontal deviation of the measuring tool.
The maximum permitted deviation on the measuring distance of
2×5m=10m is as follows:
10m×±0.5mm/m=±5mm. The discrepancy d between points and 
must therefore amount to no more than 5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). Select vertical mode with automatic levelling.
Aim the vertical laser line at the door opening and allow the measuring
tool to level in.
2,5 m
2,5 m
– Mark the centre of the vertical laser line on the floor of the door opening
(point), 5m away on the other side of the door opening (point) and on
the upper edge of the door opening (point).
Bosch Power Tools 1 609 92A 58R | (04.03.2020)