Bosch GCL 2-15 + RM1 + вкладка под L-boxx [22/311] Checking the level accuracy of the vertical line

Bosch GCL 2-15 + RM1 + вкладка под L-boxx [22/311] Checking the level accuracy of the vertical line
22 | English
1 609 92A 4HE | (09.08.2018) Bosch Power Tools
Checking the Level Accuracy of the Vertical Line
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 open-
ing on a firm, flat surface (not on a tripod). Select vertical
line mode with automatic levelling. Aim the 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).
d
2 m
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 fol-
lows:
Doubled height of the door opening×0.3mm/m
Example: At a door opening height of 2m, the maximum de-
viation amounts to
2×2m×±0.3mm/m=±1.2mm. The points and
must therefore be no further than 1.2mm from each other.
Checking Plumb Accuracy
For this check, you will need a clear measuring space on firm
ground with a distance of approx. 5m between the floor and
the ceiling.
Mount the measuring tool onto the rotating mount(13)
and place it on the floor. Select point mode and allow the
measuring tool to level in.
5 m
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).
180°
d
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 and
on the ceiling reveals the actual deviation of the meas-
uring tool from the vertical plane.
You can calculate the maximum permitted deviation as fol-
lows:
Doubled distance between floor and ceiling×0.7mm/m
Example: At a floor-to-ceiling distance of 5m, the maximum
deviation amounts to
2×5m×±0.7mm/m=±7mm. The points and must
therefore be no further than 7mm from each other.

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