Bosch GCL Professional 2-15 Manual Original página 23

– Rotate the measuring tool 180° and position it on the
other side of the door opening, directly behind point Ⅱ.
Allow the measuring tool to level in and align the vertical
laser line in such a way that its centre passes through
points Ⅰ and Ⅱ exactly.
– Mark the centre of the laser line on the upper edge of the
door opening as point Ⅳ.
– The discrepancy d between the two marked points Ⅲ and
Ⅳ 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 Ⅲ and Ⅳ
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 (14)
and place it on the floor. Select point mode and allow the
measuring tool to level in.
– 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).
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).
Bosch Power Tools
– The discrepancy d between the two marked points Ⅰ and
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 Ⅰ and Ⅲ must
therefore be no further than 7 mm from each other.
Working Advice
u
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface
for measuring. Place the measuring tool with the 1/4" tripod
mount (10) on the thread of the tripod (23) or a conven-
tional camera tripod. Use the 5/8" tripod mount (11) to se-
cure the measuring tool on a conventional building tripod.
Tighten the measuring tool using the locking screw of the tri-
pod.
Roughly align the tripod before switching on the measuring
tool.
Securing with the universal holder (accessory)
(see figure G)
You can secure the measuring tool, for example, on vertical
surfaces or magnetisable materials using the universal
holder (19). The universal holder is also suitable for use as a
5 m
floor stand and facilitates the height adjustment of the meas-
uring tool.
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Roughly align the universal holder (19) before switching on
the measuring tool.
Working with the Laser Target Plate (see figure G)
The laser target plate (20) improves visibility of the laser
beam in unfavourable conditions and at greater distances.
The reflective surface of the laser target plate (20) improves
visibility of the laser line. The transparent surface enables
the laser line to be seen from behind the laser target plate.
Laser Goggles (Accessory)
The laser goggles filter out ambient light. This makes the
180°
light of the laser appear brighter to the eye.
u
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Ⅲ on the ceiling reveals the actual deviation of the meas-
uring tool from the vertical plane.
Only the centre of the laser point or laser line must be
used for marking. The size of the laser point/the width of
the laser line changes depending on the distance.
Keep your fingers away from the rear side of the mag-
netic accessory while attaching the accessory to sur-
faces. The strong pulling force of the magnets may jam
your fingers.
Do not use the laser goggles (accessory) as protective
goggles. The laser goggles make the laser beam easier to
see; they do not protect you against laser radiation.
Do not use the laser goggles (accessory) as
sunglasses or while driving. The laser goggles do not
provide full UV protection and impair your ability to see
colours.
1 609 92A 8E9 | (20.03.2023)
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