Manual Bosch GCL 2-50 G (page 20 of 266) (All languages)

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20 | English

– 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(11)

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°

– 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.

Working Advice

uOnly 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.

Working with the RM10Rotating Mount

(seefiguresF–H)

You can use the rotating mount(11) to rotate the measuring

tool 360° around a central, always visible plumb point. This

enables you to set up the laser lines without having to

change the position of the measuring tool.

You can use the fine adjustment screw (14) to align vertical

laser lines precisely with reference points.

Place the measuring tool with the guide groove(6) on the

guide rail(12) of the rotating mount(11) and slide the

measuring tool all the way onto the platform.

To disconnect the measuring tool, pull it off the rotating

mount in the opposite direction.

Positioning possibilities of the rotating mount:

– Standing on a flat surface,

– Screwed to a vertical surface,

– On metallic surfaces using the magnets(15),

– On crown moulding using the ceiling clip(16).

Roughly align the rotating mount(11) before switching on

the measuring tool.

Working with the Laser Target Plate

The laser target plate(20) improves visibility of the laser

beam in unfavourable conditions and at greater distances.

The reflective half of the laser target plate (20) improves vis-

ibility of the laser line. The transparent half enables the laser

line to be seen from behind the laser target plate.

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 (5) on the thread of the tripod (21) or a conventional

camera tripod. Tighten the measuring tool using the locking

screw of the tripod.

Roughly align the tripod before switching on the measuring

tool.

1 609 92A 7LT | (28.04.2022) Bosch Power Tools

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Bosch GCL 2-50 G Manual

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