Bosch Professional GPL 3 G Original Instructions Manual page 27

– Mark the centre of the top laser point on the ceiling (point I). Also mark the centre of
the bottom laser point on the floor (point II).
– Turn the measuring tool by 180°. Position it so that the centre of the bottom laser
point falls onto the marked point II. Allow the measuring tool to level in. Mark the
centre of the top laser point (point III).
– The discrepancy d between the two marked points Ⅰ and Ⅲ on the ceiling reveals the
actual deviation of the measuring tool from the vertical plane.
You can calculate the maximum permitted deviation as follows:
Doubled distance between floor and ceiling × 0.35 mm/m
Example: At a floor-to-ceiling distance of 2.5 m, the maximum deviation amounts to
2 × 2.5 m × ±0.35 mm/m = ±1.75 mm. The points Ⅰ and Ⅲ must therefore be no further
than 1.75 mm from each other.
Bosch Power Tools
2,5 m
d
180°
English | 27
1 609 92A 5MH | (22.10.2020)