BOSCH GLM 50-27 CG Digital Laser Measure Instruction Manual

: June 12, 2024
: Bosch

Table of Contents

GLM 50-27 CG Digital Laser Measure
Safety Instructions
Product Description and Specifications
Product Features
Technical data
Lithium-ion battery pack (accessory)
Operation
Maintenance and Service
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

GLM Professional
50-27 CG | 50-27 C
Original instructions
BOSCH GLM 50 27 CG Digital Laser Measure

GLM 50-27 CG Digital Laser Measure

www.bosch-pt.com/manuals BOSCH GLM 50 27
CG Digital Laser Measure - qr code 2 www.bosch-pt.com/manuals

Visit the online operating instruction for additional product information.

BOSCH GLM 50 27 CG Digital Laser Measure - Figure 1

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 unrecognisable. 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.
Do not open the battery. There is a risk of short-circuiting.
In case of damage and improper use of the battery, vapours may be emitted. The battery can set alight or explode. Ensure the area is well ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
If used incorrectly or if the battery is damaged, flammable liquid may be ejected from the battery. Contact with this liquid should be avoided. If contact accidentally occurs, rinse off with water. If the liquid comes into contact with your eyes, seek additional medical attention.
Liquid ejected from the battery may cause irritation or burns.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
When the battery is not in use, keep it away from paper clips, coins, keys, nails, screws or other small metal objects that could make a connection from one terminal to another. A short circuit between the battery terminals may cause burns or a fire.
Only use the battery with products from the manufacturer. This is the only way in which you can protect the battery against dangerous overload.
Only charge the batteries using chargers recommended by the manufacturer. A charger that is suitable for one type of battery may pose a fire risk when used with a different battery.
Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short- circuiting.
The measuring tool is equipped with a wireless interface. Local operating restrictions, e.g. in aeroplanes or hospitals, must be observed.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Robert Bosch Power Tools GmbH is under license.

Caution! When using the measuring tool with Bluetooth®, a fault may occur in other devices and systems, aeroplanes and medical devices (e.g. pacemakers, hearing aids). Also, damage to people and animals in the immediate vicinity cannot be completely excluded. Do not use the measuring tool with Bluetooth® in the vicinity of medical devices, petrol stations, chemical plants, areas with a potentially explosive atmosphere and in blasting areas. Do not use the measuring tool with Bluetooth® on aeroplanes. Avoid using the product near your body for extended periods.

Safety instructions for power supply

This power supply is not intended for use by children or persons with physical, sensory or mental limitations or a lack of experience or knowledge. This power supply can be used by children aged 8 or older and by persons who have physical, sensory or mental limitations or a lack of experience or knowledge if a person responsible for their safety supervises them or has instructed them in the safe operation of the power supply and they understand the associated dangers. Otherwise, there is a risk of operating errors and injuries.

Do not expose the power supply to rain or wet conditions. Water entering the power supply will increase the risk of electric shock.

Keep the power supply clean. Dirt poses a risk of electric shock.
Always check the power supply before use. Stop using the power supply if you discover any damage.
Do not open the power supply yourself, and have it repaired only by a qualified specialist using only original replacement parts. Damaged power supplies increase the risk of electric shock.

Product Description and Specifications

Please unfold the fold-out page with the diagram of the measuring tool and leave it open while reading the instruction manual.
Intended Use
The measuring tool is intended for measuring distances, lengths, heights, clearances and inclines, and for calculating areas and volumes.
The measuring tool is suitable for indoor and outdoor use.
The measuring results can be transferred to other devices via Bluetooth®.

Product Features

The numbering of the product features refers to the representation of the measuring tool in the images.

(1) Bluetooth® button
(2) Function button
(3) Minus button
(4) Display
(5) Measuring button
(6) Plus button
(7) Basic settings button
(8) On/off/back button
(9) Carrying strap mount
(10) Laser warning label
(11) Serial number| (12) Battery compartment cover locking mechanism
(13) Battery compartment cover
(14) 1/4″ tripod thread
(15) Reception lens
(16) Laser beam output
(17) Carrying strap A)
(18) Protective bag
(19) Li-ion battery pack A)
(20) Locking mechanism of the Li-ion battery pack A)
(21) USB Type-C® cable A)B)
(22) Flap for USB port A)
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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.
B) USB Type-C® and USB-C® are trademarks of USB Implementers Forum.

Display Elements

(a) Reference level of measurement
(b) Bluetooth® status
Bluetooth® activated, connection not established
Bluetooth® activated, connection established
(c) Battery indicator
(d) Measured value lines
(e) Result line
(f) Measuring function display
(g) Slope angle display
(h) Status bar
(i) Functions menu
(j) Basic settings menu
(k) Further basic settings menu

Technical data

Digital laser measure	GLM 50-27 CG	GLM 50-27 C
Article number	3 601 K72 U..	3 601 K72 T..
Measuring rangeA)	0.05–50 m	0.05–50 m
Measuring range (unfavourableconditions)B)	0.05–20 m	0.05–20 m
Measuring accuracyA)	±1.5 mm	±1.5 mm
Measuring accuracy (unfavourable conditions)B)	±3.0 mm	±3.0 mm
Smallest display unit	0.5 mm	0.5 mm

A) When measuring from the front edge of the measuring tool, this applies for high reflectivity of the target (e.g. a wall painted white), weak background lighting and a 25 °C operating temperature; a distance-dependent deviation of ±0.05 mm/m must additionally be factored in.
B) When measuring from the front edge of the measuring tool, this applies for high reflectivity of the target (e.g. a wall painted white), strong background lighting, 25 °C operating temperature and large altitudes. In addition, a deviation of ±0.15 mm/m must be taken into account, depending on the distance.
C) In continuous measurement mode, the max. operating temperature is +40 °C.
D) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
E) Bluetooth® deactivated
F) For additional technical data, visit: https://www.bosch- professional.com/ecodesign
G) When using Bluetooth® Low Energy devices, it may not be possible to establish a connection depending on the model and operating system.
Bluetooth® tools must support the GATT profile. The serial number (11) on the type plate is used to clearly identify your measuring tool.

Inserting/Changing the Battery

Always replace all the batteries/rechargeable batteries at the same time. Only use batteries/rechargeable batteries from the same manufacturer and which have the same capacity.
When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment.
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.
Never store the measuring tool without an inserted battery compartment cover (13) or lithium-ion battery pack (19) (accessory), particularly in dusty or humid environments.

Lithium-ion battery pack (accessory)

Inserting/changing the lithium-ion battery pack (accessory)

Insert the lithium-ion battery pack (19) (accessory).
To remove the lithium-ion battery pack (19) (accessory), press the locking mechanism (20) and take the lithium-ion battery pack out. (see Fig. A, page 5)

Charging the lithium-ion battery pack (accessory)
For recharging, use a USB power supply unit whose technical data (voltage and charging current) corresponds to that of the recommended power supply unit. Observe the operating manual of the USB power supply unit. Recommended power supply unit: See technical data.
Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the power adaptor. Power adaptors marked with 230 V can also be operated with 220 V.
Lithium-ion rechargeable batteries are supplied partially charged according to international transport regulations. To ensure full rechargeable battery capacity, fully charge the rechargeable battery before using your tool for the first time.
For more information, you can access the online operating instructions at www .bosch-pt.com/manuals

Operation

Never leave the measuring tool unattended when switched on, and ensure the measuring tool is switched off after use. Others may be dazzled by the laser beam.
Protect the measuring tool from moisture and direct sunlight.
Do not expose the measuring tool to any extreme temperatures or variations in temperature. For example, do not leave it in a car for extended periods of time. In case of large variations in temperature, allow the measuring tool to adjust to the ambient temperature before putting it into operation. The precision of the measuring tool may be compromised if exposed to extreme temperatures or variations in temperature.
Avoid substantial knocks to the measuring tool and avoid dropping it. After strong external influences on the measuring tool, you should always carry out an accuracy check (see “Accuracy Check”, page 35) before further work.

Switching On and Off
Press the button to switch the measuring tool and the laser on.
You can also switch on the measuring tool without the laser by pressing the button.
Press and hold the button to switch off the measuring tool.
The measured values and device settings in the memory are retained.

Measuring Process
When switching on for the first time, the measuring tool will be in the length measurement function. When switching on every subsequent time, the measuring tool will be in the measuring function that was last used.
Three settings are available for the reference level of the measurement. (see “Selecting the Reference Level”, page 32)
Apply the measuring tool to the point at which you want to start the measurement (e.g. wall).
If you have switched on the measuring tool with the button, then briefly press the button to switch on the laser.
Press the button to start the measurement.
Once the measurement process is complete, the laser beam will switch off. For a further measurement, repeat this process.
Measured values or end results can be added or subtracted.
For more information, you can access the online operating instructions at www .bosch-pt.com/manuals
The measuring tool must not be moved during a measurement (with the exception of the continuous measurement and grade measurement functions). Therefore, place the measuring tool, as far as this is possible, against or on a firm stop or supporting surface.
The reception lens (15) and the laser beam output (16) must not be covered during the measuring process.

Selecting the Reference Level

For the measurement, you can select from various reference levels:
The rear edge of the measuring tool (e.g. when placing against walls)
The centre of the tripod thread (14) (e.g. for tripod measurements)
The front edge of the measuring tool (e.g. when measuring from a table edge)
For more information, you can access the online operating instructions at www .bosch-pt.com/manuals

Basic Settings Menu
In the Basic settings menu, you can find the following basic settings:

Changing the reference level (see “Selecting the Reference Level”, page 32)
Switching audio signals on and off
Switching Vibration on and off
Setting display brightness
Switching on and off battery saver mode
ft/m Changing the unit of measurement
Setting the language
Grade measurement calibration (see “Accuracy Check”, page 35)
Activating PRO360
Calling up Device Information
Factory settings
Deleting Memory
Press the button to open the Basic settings menu.
Use the button or button to select the required setting.
To confirm a selection, press the button or the button.
To exit the Basic settings menu, briefly press the button.

For more information, you can access the online operating instructions at www .bosch-pt.com/manuals

Integrated help function? BOSCH GLM 50 27 CG Digital Laser Measure -
function The help function integrated into the measuring tool offers animations for all measuring functions/measuring processes.
Open the Functions menu.
Select the required function with the button or with the button and press the button.
The animation showing the detailed procedure for the selected measuring function is displayed.
Press the button or the button to display the next or the previous step.

Bluetooth® interface

Activating the Bluetooth® interface for transmitting data to a mobile device
Ensure that the Bluetooth® interface is activated on your mobile device.
Press the button to call up the Bluetooth® menu.
Press the button again to activate the Bluetooth® interface. The connection status and the active connection (b) are displayed in the status bar (h) of the measuring tool.

Deactivating the Bluetooth® interface

Press the button to bring up the Bluetooth® menu and press the button again to deactivate the Bluetooth® interface.
Accuracy Check
Regularly check the accuracy of the grade measurement and distance measurement.
For more information, you can access the online operating instructions at www .bosch-pt.com/manuals

Error Message
If a measurement cannot be performed correctly, the error message Error will appear in the display.

Try to perform the measuring process again.
If the error message appears again, switch the measuring tool off and back on, and start the measurement again.
The measuring tool monitors correct operation in every measurement. If a defect is detected, the display will indicate only the symbol shown opposite and the measuring tool switches itself off. In this case, have the measuring tool checked by an after-sales service agent for Bosch power tools.

Maintenance and Service

Maintenance and Cleaning
Only store and transport the measuring tool in the protective bag provided.
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.
Take particular care of the reception lens (15), which must be handled with the same level of care you would give to a pair of glasses or a camera lens.
If the measuring tool needs to be repaired, send it off in the protective bag (18).

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.

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

You can find further service addresses at:www.bosch- pt.com/serviceaddresses

Transport
The recommended lithium-ion batteries are subject to legislation on the transport of dangerous goods. The user can transport the batteries by road without further requirements.
When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labelling must be observed. For preparation of the item being shipped, consulting an expert for hazardous material is required.
Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more detailed national regulations.

Disposal
Measuring tools, rechargeable/non-rechargeable batteries, accessories and packaging should be sorted for environmental-friendly recycling.
**** Do not dispose of the measuring tools or battery packs/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 Directive 2006/66/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.

Battery packs/batteries:
Li-ion:
Please observe the notes in the section on transport (see “Transport”, page 36).
Further information for South Africa

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Hereby, Robert Bosch Power Tools GmbH declares that the radio equipment type GLM 50-27 CG/GLM 50-27 C is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address:

Declaration of Conformity
Hereby, Robert Bosch Limited as authorised representative acting on behalf of Robert Bosch Power Tools GmbH declares that the radio equipment type GLM 50-27 CG/GLM 50-27 C is in compliance with the Radio Equipment Regulations 2017. The full text of the declaration of conformity is available at the following internet address: – > https://gb-doc.bosch.com

Robert Bosch Power Tools GmbH
70538 Stuttgart • GERMANY
www.bosch-professional.com
1 609 92A 7P9 (2022.06) O / 501 BOSCH GLM 50 27 CG Digital Laser Measure -
ber code