BOSCH GLL 3X Professional Cross Line Laser level Instruction Manual

: June 8, 2024
: Bosch

BOSCH GLL 3X Professional Cross Line Laser level

Safety Instructions

All instructions must be read and observed in order for the measuring tool to function safely. The safeguards integrated into the measuring tool may be compromised if the measuring tool is not used in accordance with these instructions. Never make warning signs on the measuring tool unrecognizable. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE AND INCLUDE THEM WITH THE MEASURING TOOL WHEN TRANSFERRING IT TO A THIRD PARTY.

Warning! If operating or adjustment devices other than those specified here are used or other procedures are carried out, this can lead to dangerous exposure to radiation.
The measuring tool is delivered with a laser warning sign (marked in the illustration of the measuring tool on the graphics page).
If the text of the laser warning label is not in your national language, stick the provided warning label in your national language over it before operating for the first time.
Do not direct the laser beam at persons or animals and do not stare into the direct or reflected laser beam yourself. You could blind somebody, cause accidents or damage your eyes.
If laser radiation hits your eye, you must close your eyes and immediately turn your head away from the beam.
Do not make any modifications to the laser equipment.
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.
Have the measuring tool serviced only by a qualified specialist using only original replacement parts. This will ensure that the safety of the measuring tool is maintained.
Do not let children use the laser measuring tool unsupervised. They could unintentionally blind themselves or other persons.
Do not use the measuring tool in explosive atmospheres which contain flammable liquids, gases or dust. Sparks may be produced inside the measuring tool, which can ignite dust or fumes.
When operating the measuring tool, loud signal tones may sound under certain circumstances. For this reason, keep the measuring tool away from your ears and from other persons. The loud sound can damage hearing.
Keep the magnetic accessories away from implants and other medical devices, e.g. pacemakers or insulin pumps. The magnets in the accessories generate a field that can impair the function of implants and medical devices.
Keep the magnetic accessories away from magnetic data storage media and magnetically-sensitive devices. The effect of the magnets in the accessories can lead to irreversible data loss.

Product Description and Specifications

Specifications

Please observe the illustrations at the beginning of this operating manual.

Intended Use

The measuring tool is intended for determining and checking horizontal and vertical lines.
The measuring tool is suitable for indoor use.

Product Features

The numbering of the product features shown refers to the illustration of the measuring tool on the graphic page.

Laser beam outlet aperture
Status indicator
On/off button/operating mode button
Pendulum lock switch
1/4″ tripod mount
Battery compartment cover locking mechanism
Battery compartment cover
Serial number
Laser warning label
Magnet
Universal holder (BM 1)a)
Laser target platea)
Laser gogglesa)
Tripod (BT 150)a)
Telescopic shaft (BT 350)a)
a) Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.

Technical data

Cross line laser	GLL 3 X
Article number	3 601 K63 C..
Working range up to approx. A)	15 m
Levelling accuracy B)	±0.5 mm/m
Typical self-levelling range	±4°
Typical levelling time	< 6 s
Operating temperature	–10 °C to +40 °C
Storage temperature	–20 °C to +70 °C
Max. altitude	2000 m
Relative air humidity max.	90 %
Pollution degree according to IEC 61010-1	2C)
Laser class	2
Laser type	635 nm, < 1 mW
C6	1
Divergence	0.6 mrad (full angle)
Tripod mount	1/4″
Batteries	4 × 1.5 V LR6 (AA)
Approx. operating time	20 h

Weight according to
EPTA-Procedure 01:2014| 0.5 kg
Dimensions (length × width × height)| 97 × 65 × 120 mm

A ) The working range may be reduced by unfavourable environmental conditions (e.g. direct sunlight).
B ) The values stated presuppose normal to favourable environmental conditions (e.g. no vibration, no fog, no smoke, no direct sunlight). Extreme fluctuations in temperature can cause deviations in accuracy.
C ) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected. The serial number (8) on the type plate is used to clearly identify your measuring tool.

Assembly

Inserting/Changing the batteries

It is recommended that you use alkaline manganese batteries to operate the measuring tool.
To open the battery compartment cover ( 7 ), press the locking mechanism ( 6 ) and lift open the battery compartment cover. Insert the batteries.
When inserting the batteries, ensure the polarity is correct according to the representation on the inside of the battery compartment cover ( 7 ).
Always replace all the batteries at the same time. Only use batteries from the same manufacturer and which have the same capacity.

Take the batteries out of the measuring tool when you are not using it for a prolonged period of time. The batteries can corrode and self discharge during prolonged storage in the measuring tool.

Operation

Starting Operation

Protect the measuring tool from moisture and direct sunlight.
Do not expose the measuring tool to any extreme temperatures or fluctuations in temperature. For example, do not leave it in a car for extended periods of time. If it has been subjected to significant fluctuations in temperature, first allow the measuring tool to adjust to the ambient temperature and then always carry out an accuracy check before continuing work (see “Accuracy Check of the Measuring Tool”. The precision of the measuring tool may be compromised if exposed to extreme temperatures or fluctuations in temperature.
Avoid substantial knocks to the measuring tool and avoid dropping it. Always carry out an accuracy check before continuing work if the measuring tool has been subjected to severe external influences (see “Accuracy Check of the Measuring Tool”.
Push the pendulum lock switch to the position when you are transporting the measuring tool. This locks the pendulum unit, which may be damaged by strong movements.

Switching on/off

To switch on the measuring tool, press the on/off button (3). As soon as it is switched on, the measuring tool emits laser lines from the outlet apertures (1).

Do not direct the laser beam at persons or animals and do not stare into the laser beam yourself (even from a distance).
To switch off the measuring tool, press the on/off button (3) until the status indicator (2) goes out. Slide the pendulum lock switch (4) into position to lock the pendulum unit.
Never leave the measuring tool unattended when switched on, and ensure the measuring tool is switched off after use. Others may be blinded by the laser beam.

Operating Modes

After switching on, the measuring tool is in cross-line operating mode. To change the operating mode, press the on/off button (3) as often as required until the requested operating mode is set.
You can choose between the following operating modes:

Symbol	Operating mode
Cross-line operation (see figures A − C and F ): The measuring

tool generates a horizontal and a vertical laser line out of the front laser outlet aperture as well as a vertical laser line out of the side laser outlet aperture (1). Both vertical laser lines run at a 90° angle to each other.

| Horizontal operation (see figure D ): The measuring tool generates a horizontal laser line out of the front laser outlet aperture (1).

| Vertical operation (see figure E ): The measuring tool generates a vertical laser line out of the front laser outlet aperture (1).

All operating modes can be selected with both automatic levelling or the pendulum lock.

Automatic Levelling

Working with automatic levelling (see figures A–E) Position the measuring tool on a level, firm support or attach it to a tripod (14).
To work with automatic levelling, push the pendulum lock switch (4) to the position. The status indicator (2) lights up green (symbol /green).

The automatic levelling function automatically compensates irregularities within the self-levelling range of ±4°. The levelling is finished as soon as the laser lines stop moving.
If automatic levelling is not possible, e.g. because the surface on which the measuring tool is standing deviates by more than 4° from the horizontal plane, the automatic status indicator (2) lights up red, the laser lines flash and an audio signal sounds.
If this is the case, set up the measuring tool in a level position and wait for the self-levelling to take place. As soon as the measuring tool is within the self-levelling range of ±4°, the laser lines light up continuously, the status indicator (2) lights up green and the audio signal is switched off.
It is not possible to work with automatic levelling outside the self-levelling range of ±4°, as the levelling accuracy of the laser beams cannot be guaranteed and it cannot be guaranteed that the laser beams are perpendicular.
In case of ground vibrations or position changes during operation, the measuring tool is automatically levelled again.
Upon re-levelling, check the position of the horizontal or vertical laser line with regard to the reference points to avoid errors by moving the measuring tool.

Working with a pendulum lock (see figure F)

To work with a pendulum lock, push the pendulum lock switch (4) to the position. The status indicator (2) lights up red (symbol /red).
For work with the pendulum lock, the automatic levelling is switched off. You can hold the measuring tool freely in your hand or place it on a sloping surface. This means that the laser lines are no longer levelled and no longer necessarily run perpendicular to one another.

Accuracy Check of the Measuring Tool

Influences on Accuracy

The largest influence is exerted by the ambient temperature. In particular, temperature differences that occur from the ground upwards can refract the laser beam.
Since the temperature stratification is greatest at ground level, you should mount the measuring tool on a tripod and position it in the centre of the work surface, wherever this is possible.
In addition to external influences, device-specific influences (e.g. falls or heavy impacts) can also lead to deviations. For this reason, check the levelling accuracy each time before beginning work.
First check the height accuracy and levelling accuracy of the horizontal laser line, then the levelling accuracy of the vertical laser line.
Should the measuring tool exceed the maximum deviation during one of the tests, please have it repaired by a Bosch after-sales service.

Checking the Height Accuracy of the Horizontal Line

For this check, you will need a free measuring distance of 5 m on firm ground between two walls (designated A and B).

Mount the measuring tool close to wall A on a tripod, or place it on a firm, level surface. Switch on the measuring tool. Select cross-line mode with automatic levelling.
Aim the laser at the closer wall A and allow the measuring tool to level in. Mark the middle of the point at which the laser lines cross on the wall (point I).
Turn the measuring tool 180°, allow it to level in and mark the point where the laser lines cross on the opposite wall B (point Ⅱ).
Position the measuring tool – without rotating it – close to wall B, switch it on and allow it to level in.
Align the height of the measuring tool (using the tripod or by placing objects underneath as required) so that the point where the laser lines cross exactly hits the previously marked point Ⅱ on wall B.
Turn the measuring tool 180° without adjusting the height. Aim it at wall A such that the vertical laser line runs through the already marked point Ⅰ. Allow the measuring tool to level in and mark the point where the laser lines cross on wall A (point Ⅲ).
The discrepancy d between the two marked points Ⅰ and Ⅲ on wall A reveals the actual height deviation of the measuring tool.

The maximum permitted deviation on the measuring distance of 2 × 5 m = 10 m is as follows:
10 m × ±0.5 mm/m = ±5 mm. The discrepancy d between points Ⅰ and Ⅲ must therefore amount to no more than 5 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. Select horizontal mode with automatic levelling and allow the measuring tool to level in.
At a distance of 2.5 m from the measuring tool, mark the centre of the laser line on both walls (point Ⅰ on wall A and point Ⅱ on wall B).
Set up the measuring tool at a 5 m distance and rotated by 180° and allow it to level in.
Align the height of the measuring tool (using the tripod or by placing objects underneath as required) so that the centre of the laser line exactly hits the previously marked point Ⅱ on wall B.
Mark the centre of the laser line on wall A as point Ⅲ (vertically above or below point Ⅰ).
The discrepancy d between the two marked points Ⅰ and Ⅲ on wall A reveals the actual horizontal deviation of the measuring tool.

The maximum permitted deviation on the measuring distance of 2 × 5 m = 10 m is as follows:
10 m × ±0.5 mm/m = ±5 mm. The discrepancy d between points Ⅰ and Ⅲ must therefore amount to no more than 5 mm.

Checking the Levelling Accuracy of the Vertical Lines
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 opening on a firm, flat surface (not on a tripod). Select crossline mode with automatic levelling. Aim the front vertical laser line at the door opening and allow the measuring tool to level in.
Mark the centre of the vertical laser line on the floor of the door opening (point Ⅰ), 5 m away on the other side of the door opening (point Ⅱ) and on the upper edge of the door opening (point Ⅲ).
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 follows:
Doubled height of the door opening × 0.5 mm/m
Example : At a door opening height of 2 m, the maximum deviation amounts to 2 × 2 m × ±0.5 mm/m = ±2 mm. The points Ⅲ and Ⅳ must therefore be no further than 2 mm from each other.

Repeat the measuring procedure for the lateral vertical laser line. To do this, turn the measuring tool by 90° before beginning the measurement.

Working Advice

Only the centre of the laser line must be used for marking. The width of the laser line changes depending on the distance.

Working with the Laser Target Plate

The laser target plate (12) improves visibility of the laser beam in unfavorable conditions and at greater distances. The reflective surface of the laser target plate (12) improves visibility of the laser line. The transparent surface 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 (14) 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.

Securing with the universal holder (accessory)

Using the universal holder (11), you can secure the measuring tool on vertical surfaces, pipes or magnetizable materials, for example. The universal holder is also suitable for use as a floor stand and facilitates height adjustment of the measuring tool.
Roughly align the universal holder (11) before switching on the measuring tool.

Laser Goggles (Accessory)

The laser goggles filter out ambient light. This makes the light of the laser appear brighter to the eye.

Do not use the laser goggles 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 as sunglasses or while driving. The laser goggles do not provide full UV protection and impair your ability to see colours.

Maintenance and Service

Maintenance and Cleaning

Keep the measuring tool clean at all times.
Never immerse the measuring tool in water or other liquids.
Wipe off any dirt using a damp, soft cloth. Do not use any detergents or solvents.
The areas around the outlet aperture of the laser in particular should be cleaned on a regular basis. Make sure to check for lint when doing this.
Only store and transport the measuring tool in the protective bag provided.
If the measuring tool needs to be repaired, send it off in the protective bag.

After-Sales Service and Application Service

Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.

In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.

India

Bosch Service Center
69, Habibullah Road, (Next to PSBB School), T. Nagar
Chennai – 600077
Phone: (044) 64561816
Bosch Service Center
18, Community Center
Phase 1, Mayapuri
New Delhi – 110064
Phone: (011) 43166190
Bosch Service Center
Shop no 7&8, Aspen garden
Walbhat road , Goregaon (E)
Near to Ram Mandir Railway Station
Mumbai – 400063
Mobile: 09819952950

Malaysia

Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: ( 03) 79583838
E-Mail: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my

Great Britain

Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Israel

Ledico Ltd.
31 Lazrov Street
P.O. Box 6018 Rishon Le Ziyon
service@ledico.com

Korea

Tel.: 080-955-0909 (Hotline)
You can find further service addresses at:www.bosch- pt.com/serviceaddresses

Disposal

Measuring tools, accessories and packaging should be recycled in an environmentally friendly manner.
Do not dispose of measuring tools or batteries with household waste.

Only for EU countries:

According to the Directive 2012/19/EU on waste electrical and electronic equipment and its transposition into national law, measuring tools that are no longer usable, and, according to the Directive2006/66/EC, defective or drained batteries must be collected separately and disposed of in an environmentally correct manner.
If disposed incorrectly, waste electrical and electronic equipment may have harmful effects on the environment and human health, due to the potential presence of hazardous substances.

Only for United Kingdom:

According to Waste Electrical and Electronic Equipment Regulations 2013 (2013/3113) and the Waste Batteries and Accumulators Regulations 2009 (2009/890), measuring tools that are no longer usable must be collected separately and disposed of in an environmentally friendly manner.