Bosch Professional GLL 50 G Original Instructions Manual page 15

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 × ±0.6 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.
A
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).
– 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).
B
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1 609 92A 8K4 | (01.06.2023)