Bosch Professional GLL 50 G - Checking the Level Accuracy of the Horizontal Line

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d
180°
B
A
– Turn the measuring tool 180° without
adjusting the height. Aim it at wallA
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).
– 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×±0.6mm/m=±6mm. The discrepancy d between pointsⅠ and Ⅲ must therefore
amount to no more than 6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 a tripod, or place it
on a firm, level surface. Switch the measuring tool on and allow it to level in.
2,5 m
5,0 m
2,5 m
5,0 m
5,0 m
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).
Bosch Power Tools 1 609 92A 8K4 | (01.06.2023)