Bosch GLM 40 Assembly instructions

IMPORTANT: IMPORTANT: IMPORTANTE:
Read Before Using Lire avant usage Leer antes de usar
Operating/Safety Instructions
Consignes d’utilisation/de sécurité
Instrucciones de funcionamiento y
seguridad
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See page 5 Voir page 21 Ver la página 38
GLM 40

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10
9
8
7
5
432
1
12 11
6
i
a b
e
h
e
e
f
c
g
d

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13
15
14
16
1
A

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1.5 ft
1 ft
1.
2. 3.
B
2
1
X
C

-5-
General Safety Rules
!
WARNING
Read all instructions. Failure to follow all
instructions listed below may result in
hazardous radiation exposure, electric shock, fire and/or
serious injury. The term “tool” in the warnings listed below
refers to your mains-operated (corded) tool or battery-operated
(cordless) tool.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
The following label is on your laser
tool for your safety. ALWAYS BE
AWARE of its location when using
the tool.
DO NOT direct the
laser beam at persons
or animals and do not
stare into the laser beam yourself. This tool
produces class 2 laser radiation and complies
with 21 CFR 1040.10 and 1040.11 except for deviations
pursuant to Laser Notice No. 50, dated June 24, 2007. This
can lead to persons being blinded.
Safety Rules
Working safely with the
measuring tool is possible
only when the operating
and safety information
are read completely and
the instructions contained
therin are strictly followed.
Never make warning labels
on the Measuring tool
unrecognizable.
Never aim the beam at a
workpiece with a reflective
surface. Bright shiny
reflective sheet steel or
similar reflective surfaces are
not recommended for laser
use. Reflective surfaces could
direct the beam back towards the
operator.
Take care to recognize the
accuracy and range of the
device. Measurement may not
be accurate if used beyond the
rated range of the device.
Use of controls or
adjustments or performance
of procedures other than
those specified herein may

-6-
result in hazardous radiation
exposure.
The use of optical
instruments with this product
will increase eye hazards.
Have the measuring tool
repaired only through
qualified specialist using
original spare parts. This
ensures that the safety of the
measuring tool is maintained.
Do not allow children to use
the measuring tool without
supervision. They could
unintentionally blind other
persons.
Do not point the laser beam
at persons or animals and do
not look into the laser beam
yourself, not even from a
large distance.
Do not use the laser viewing
glasses as safety goggles.
The laser viewing glasses are
used for improved visualization of
the laser beam, but they do not
protect against laser radiation.
Do not use the laser viewing
glasses as sun glasses or
in traffic. The laser viewing
glasses do not afford complete
UV protection and reduce color
perception.
Be sure to read and
understand all instructions
in this manual before using
this product. Failure to follow
all instructions may result in
hazardous radiation exposure,
electric shock, fire, and/or bodily
injury.
Use of controls or
adjustments or performance
of procedures other
than those specified in
this manual, may result
in hazardous radiation
exposure.
The use of optical
instruments with this product
will increase eye hazard.
ALWAYS: Make sure that any
bystanders in the vicinity of
use are made aware of the
dangers of looking directly
into the measuring tool.
DO NOT remove or deface
any warning or caution
labels. Removing labels
increases the risk of
exposure to laser radiation.
DO NOT stare directly at the
laser beam or project the
laser beam directly into the
eyes of others. Serious eye
injury could result.
DO NOT place the measuring
tool in a position that may
cause anyone to stare into
the laser beam intentionally
or unintentionally. Serious eye
injury could result.
Safe Operating Procedures

-7-
DO NOT use any optical tools
such as, but not limited to,
telescopes or transits to view
the laser beam. Serious eye
injury could result.
ALWAYS remove the
batteries when cleaning the
laser light aperture to laser
lens.
DO NOT operate the
measuring tool around
children or allow children to
operate the measuring tool.
Serious eye injury could result.
ALWAYS turn the measuring
tool “OFF” when not in use.
Leaving the measuring tool “ON”
increases the risk of someone
inadvertently staring into the
laser beam.
DO NOT operate the
measuring tool in
combustible areas such as
in the presence of flammable
liquids, gases or dust.
ALWAYS position the
measuring tool securely.
Damage to the measuring tool
and/or serious injury to the user
could result if the measuring tool
falls.
ALWAYS use only the
accessories that are
recommended by the
manufacturer of your
measuring tool. Use of
accessories that have been
designed for use with other
measuring tools could result in
serious injury.
DO NOT leave measuring
tool “on” unattended in any
operation mode.
Repair and servicing must
always be performed by
a qualified repair facility.
Repairs performed by unqualified
personnel could result in serious
injury.
DO NOT use this measuring
tool for any purpose other
than those outlined in this
manual. This could result in
serious injury.
DO NOT disassemble the
measuring tool. There are no
user serviceable parts inside.
Disassembling the laser will
void all warranties on the
product. Do not modify the
product in any way.
Modifying
the measuring tool may result
in hazardous laser radiation
exposure.
Electrical safety
Batteries can explode or leak,
cause injury or fire. To reduce
this risk, always follow all
instructions and warnings on
the battery label and package.
DO NOT short any battery
terminals.
DO NOT charge alkaline
batteries.
DO NOT mix old and new
batteries. Replace all of them
at the same time with new
batteries of the same brand
and type.

-8-
The measuring tool is intended for measuring distances, lengths,
heights and clearances. The measuring tool is suitable for
measuring indoors.
Warning Symbol
Alerts user to warning
messages
Read Manual Symbol
Alerts user to read
manual
Intended Use
Symbols
Features
1 Display
2 Measuring button
3 Minus button
4 Function button
5 Clear/ On/Off button
6 Plus button
7 Battery lid
8 Latch of battery lid
9 Serial number
10 Laser warning label
11 Reception lens
12 Laser beam outlet
13 Protective pouch
14 Target cards
15 Hand strap
16 ID tag*
Display Elements
a Temperature warning
bLow battery indicator
cMeasuring functions
Real time measurement
Length measurement
Area/Surface measurement
Volume measurement
Indirect measurement
dLaser activation indicator
eUnit of measure
fCurrent measuring value
gMemory value display
hPrevious measuring value(s)
iError message “Error”
The numbering of the product features shown refers to the
illustration of the measuring tool on the graphic page.
*
Optional accessory
DO NOT mix battery
chemistries.
Dispose of or recycle batteries
per local code.
DO NOT dispose of batteries
in fire.
Keep batteries out of reach of
children.
Remove batteries if the device
will not be used for several
months.

-9-
Technical Data
Digital Laser Measure GLM 40
Article Number
3601K72910
Measuring range (typical) 6 in - 135 ft (0.15 - 40 m)A
Measuring accuracy (typical) ± 1/16 in (±1.5 mm)B
Lowest indication unit ± 1/32 in (1 mm)
Operating temperature +14 °F to 113 °F(-10 °C to 45 °C)
Storage temperature -4 °F to 158 °F (-20 °C to 70 °C)
Relative air humidity, max 90%
Laser class 2
Laser type 635nm, <1mW
Automatic switch-off after approx.
-Laser 20 s
-Measuring Tool 5 min
Degree of Protection IP54
(dust and splash water protected)C
Batteries 2 x 1.5V (AAA)
Battery service life in measuring
operation, approx 4 h
Weight 0.22 lb (0.1 kg)
Dimensions 4.1 x 1.6 x 0.9 in
(105 x 41 x 24 mm)
A) The working range increases depending on how well the laser light is
reflected from the surface of the target (scattered, not reflective) and with
increased brightness of the laser point to the ambient light intensity (interior
spaces, twilight). In unfavorable conditions, e.g., with extreme illumination
or a badly reflecting surface, the measuring range may be limited.

-10-
Preparation
Inserting/Replacing the Batteries
AAA Alkaline batteries are recommended for the measuring tool.
To open the battery lid 7 , press the latch 8 and remove the
battery lid. Insert the batteries. When inserting, pay attention to
the correct polarity according to the representation on the inside
of the battery compartment.
When the battery symbol appears for the first time on the
display, there is approximately 15 minutes of useage remaining
while in real time measurement mode. When the battery symbol
flashes, the batteries must be replaced; measurements are no
longer possible.
Always replace all batteries at the same time. Only use
batteries from one brand and with identical capacity.
Remove the batteries from the tool when not using it for
extended periods. When storing for extended periods, the
batteries can corrode and discharge themselves.
Operation
Initial Operation
!
WARNING
Protect the tool against moisture and direct
sun irradiation.
Do not subject the tool to extreme temperatures or variations
in temperature. As an example, do not leave it in vehicles for
longer periods. In case of large variations in temperature, allow
the tool to adjust to the ambient temperature before putting it
into operation. In case of extreme temperatures or variations in
temperature, the accuracy of the tool can be impaired.
B) In favorable conditions, a deviation influence of ±0.05 mm/m must
be taken into account. In unfavorable conditions, e.g., with extreme
illumination, badly reflecting surface or the room temperature deviating
heavily from 77 °F (25 °C), the maximum deviation can be up to ±3.0mm.
Additionally, a deviation influence of 0.15mm/m must be taken into account.
C) Battery compartment not included.
The measuring tool can be clearly identified with the serial number 9on
the type plate.

-11-
Avoid heavy impact or falling of the tool. After heavy exterior
impact on the tool, an accuracy check should always be carried
out before continuing to work (see “Accuracy Check of the
Distance Measurement”, page 17) each time before continuing
to work.
!
WARNING
Do not point the laser beam at persons or
animals and do not look into the laser
beam yourself, not even from a large distance.
Do not leave the switched on measuring tool unattended and
switch the tool off after use. Other persons could be blinded
by the laser beam.
Switching On and Off
– To switch on the measuring tool and the laser, press the
measuring button 2 or the Clear/ On/Off button 5 .
To
switch off the measuring tool, press and hold the Clear/ On/
Off button 5 .
Measuring Procedure (see figure A)
Once switched on, the measuring tool is in the real time
measurement function. Laser is automatically activated and tool is
measuring. You can set other measuring functions by repeatedly
pressing button 4(see “Measuring Functions”, page 12).
The rear edge of the measuring tool is always the reference point
for the measurement.
Place the measuring tool against the desired starting point of the
measurement (e.g. a wall).
Note: The measured value typically appears within 0.5 seconds
and no later than 4 seconds. The duration of the measurement
depends on the distance, the lighting conditions and the
reflective properties of the target surface. Upon completion of the
measurement the laser beam is automatically switched off.

-12-
Measuring Functions
Real time Measurement
For real time measurements, the measuring tool can be moved
relative to the target, whereby the measuring value is updated
approx. every 0.5 seconds. In this manner for example, the
distance displayed on the screen will change in real time as you
move further or closer to the measured target.
For real time measurements, repeatedly press button 4 until
the indicator for real time measurement appears on the display
1 . Press Measure button 2 to activate laser. The laser will be
switched on and measuring will begin immediately.
Move the measuring tool until the required
distance value is indicated in the bottom of the
display.
Press the measuring button 2 to hold the
measurement. The held measurement will
display at the bottom of the display.
Press the measuring button 2 to reactivate real time measuring
on the bottom line and the held measurement will move to the
middle line.
Press the measuring button 2 to hold the measurement on
the bottom line. The held measurement on the middle line will
continue to hold.
Press the measuring button 2 to reactivate real time measuring
on the bottom line and the previous held measurements will
move to the middle and top lines.
Press the measuring button 2 to hold the measurement on the
bottom line. The last three measurements will now be held and
displayed on the bottom, middle, and top lines.
Real time measurement automatically switches off after 5
minutes. The last measured value remains indicated at the
bottom on the display.
Length Measurement
For length measurements, repeatedly press the button 4 until the
indicator for length measurement appears on the display 1 .

-13-
To measure, press the measuring button 2 . The
measurement will be shown on the bottom of the
display.
Press the measuring button 2 and the previous
measurement will move to the middle line.
Press the measuring button 2 for a new measurement on the
bottom line.
Press the measuring button 2 and the measurement from the
middle line will move to the top line and the measurement from
the bottom line will move to the middle line.
Press the measuring button 2 for a new measurement on the
bottom line. The last three measurements will display on the
bottom, middle, and top lines.
Area Measurement
For area measurements, repeatedly press button 4 until the
indicator for area measurement appears on the display 1 .
Then measure the width and length one after the other as with a
length measurement.
The first measured value will be shown at the top of the
display. The laser beam remains switched on between the two
measurements.
After the second measurement has been
completed, the area will be automatically
calculated and displayed. The end result will be
shown at the bottom of the display, while the
current measured value will be shown above it.
Volume Measurement
For volume measurements, repeatedly press button 4 until the
indicator for volume measurement appears on the display 1 .
Then measure the width, length and depth one after the other as
with a length measurement.
The first measured value will be shown at the top of the display.
The laser beam remains switched on between the three
measurements.

-14-
After the third measurement has been completed,
the volume will be automatically calculated and
displayed. The end result will be shown at the
bottom of the display, while the current measured
value will be shown above it.
Indirect Measurement (see figure C)
For Indirect measurements, repeatedly press button 4 until the
indicator for Indirect measurement appears on the display 1 .
Make sure that there is a right angle between the sought distance
(height) and the horizontal distance (depth). Then measure
the depth and diagonal one after the other as with a length
measurement. The first measured value will be shown at the top of
the display. The laser beam remains switched on between the two
measurements.
After the second measurement has been
completed, the height will be automatically
calculated and displayed. The end result will be
shown at the bottom of the display, while the
current measured value will be shown above it.
Clearing Measured Values
Pressing the On/Off button 5 will delete the last measured value
in all measuring functions. Repeatedly pressing the On/Off button
5 will delete the measured values in reverse order.
Memory Functions
Memory value display
The memory value display is only available when a length
measurement has been performed. Maximum 10 measured
values can be retrieved.
To display memory values, repeatedly press button 4 until the
image shown below appears on the display 1
The number of the measured value is displayed
after , and the respective measured value is
displayed underneath.
Press button 6 to browse forward through the
saved measured values.

-15-
Press button 3 to browse backwards through the saved
measured values.
If no measured value is available in the memory, 0 is shown next
to .
Deleting the Memory
To delete contents of the memory, first press button 4 until the
disk icon appears on the display. Then press the Clear/ On/
Off button 5 to delete the displayed measured value.
Adding/subtracting measured values in real time and length
measurement modes (see figure B)
To measure, press the measuring button 2 .
The measured value will be shown at the bottom
of the display.
Press button 6 to add measured values or press
button 3 to subtract measured values. “ + ” or “ – ”
will appear in the middle of the display. Take
another measurement. The current measured
value will be shown at the bottom of the display,
and the previous measured value will be shown
above it.
Press button 6 to add measured values or press
button 3 to subtract measured values. The result
will be shown at the bottom of the display after
“ = ”, and the current measured value will be shown
above it.
Press button 4 to exit addition/subtraction.
In Area and Volume Measurement Modes, calculate first area/
volume measurement and then press button 3 or 6 . Calculate
the second area/volume measurement and press button 3 or 6
again to get the sum.

-16-
Changing the Unit of Measure
Press and hold the function button 4 until the
image shown to the left is displayed. Use button
3 and button 6 to cycle through the units of
measurement. Once the desired unit of
measurement is displayed, press the
measurement button 2 to return to measuring.
Switching the Sound On and Off
The sound is switched on by default.
Press and hold the function button until you see
the Changing the Unit of Measure display. Press
function button 4 again to see the image
displayed to the left. Use button 3 and 6 to adjust
the sound preference. Sound OFF will display
when the sounds has been turned off.
To switch the sound back on, use button 3 and
6 to adjust the sound preference. Sound On will
display when the sound has been turned on.
Display Illumination
The display illumination is continuously switched on. When no
button is pressed, the display illumination is dimmed after approx.
10 seconds to preserve the batteries. When no button is pressed
for approx. 30 seconds, the display illumination goes out.

-17-
Working Advice
General Information
The reception lens 11 and the laser beam outlet 12 must not be
covered when taking a measurement. Measurement takes place
at the center of the laser beam, even when target surfaces are at
a slope.
Influence on the Measuring Range
The measuring range depends on the light conditions and the
reflection properties of the target surface.
Influence on the Measuring Result
Due to physical effects, faulty measurements cannot be excluded
when measuring on different surfaces which include:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal, glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural stone).
Also, air layers with varying temperatures or indirectly received
reflections can affect the measured value.
Accuracy Check of the Distance Measurement
The accuracy of the distance measurement can be checked as
follows:
– Select a permanent measuring section with a length of
approx. 3 ft to 33 ft (1 m to 10 m); its length must be precisely
known (e.g. the width of a room or a door opening). The
measuring distance must be indoors; the target surface for
the measurement must be smooth and reflect well.
– Measure the distance 10 times in a row.
The deviation of the individual measurements from the mean
value must not exceed ±1/16” (±1.5mm). Log the measurements,
so that you can compare their accuracy at a later point of time.

-18-
Maintenance and Service
!
WARNING
Keep the measuring tool clean at all times.
Do not immerse the measuring tool into water or other fluids.
Wipe off debris using a moist and soft cloth. Do not use any
cleaning agents or solvents.
Maintain the reception lens 11 in particular, with the same
care as required for eye glasses or the lens of a camera.
If the measuring tool should fail despite the care taken in
manufacturing and testing procedures, repair should be
carried out by an authorized after-sales service center for
Bosch power tools. Do not open the measuring tool yourself.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the type plate of
the measuring tool.
Troubleshooting
Cause Corrective Measure
Temperature warning indicator (a) flashing; measurement
not possible
Measuring tool not within the tool
has operating temperature range
between +14 °F and 113 °F
( –10 °C and +45 °C)
Wait until the measuring
tool reaches the operating
temperature
Battery low indicator (b) appears
Battery voltage decreasing
(measurement still possible). Replace batteries
Battery low indicator (b) flashing; measurement not
possible
Battery voltage too low Replace batteries
All indicators on the display flash
The measuring tool is defective. Contact the Customer Service

-19-
ENVIRONMENT PROTECTION
Recycle raw materials & batteries instead of
disposing of waste. The unit, accessories,
packaging & used batteries should be sorted for
environmentally friendly recycling in accordance
with the latest regulations.
Robert Bosch Tool Corporation (“Seller”) warrants to the original
purchaser only, that all Bosch lasers and measuring tools will
be free from defects in material or workmanship for a period of
one (1) year from date of purchase. Bosch will extend warranty
coverage to two (2) years when you register your product within
eight (8) weeks after date of purchase. Product registration card
must be complete and mailed to Bosch (postmarked within eight
weeks after date of purchase), or you may register on-line at
www.boschtools.com/Service/ProductRegistration. If you choose
not to register your product, a one (1) year limited warranty will
apply to your product.
30 Day Money Back Refund or Replacement -
If you are not completely satisfied with the performance of your
laser and measuring tools, for any reason, you can return it to
your Bosch dealer within 30 days of the date of purchase for
a full refund or replacement. To obtain this 30-Day Refund or
Replacement, your return must be accompanied by the original
receipt for purchase of the laser or optical instrument product. A
maximum of 2 returns per customer will be permitted.
SELLER’S SOLE OBLIGATION AND YOUR EXCLUSIVE
REMEDY under this Limited Warranty and, to the extent
permitted by law, any warranty or condition implied by law, shall
be the repair or replacement of parts, without charge, which are
defective in material or workmanship and which have not been
misused, carelessly handled, or misrepaired by persons other
than Seller or Authorized Service Center. To make a claim under
this Limited Warranty, you must return the complete Bosch laser
or measuring tool, transportation prepaid, to any BOSCH Factory
Service Center or Authorized Service Center. Please include a
LIMITED WARRANTY OF BOSCH LASER
AND MEASURING TOOL PRODUCTS

-20-
dated proof of purchase with your tool. For locations of nearby
service centers, please use our on-line service locator or call
1-877-267-2499.
THIS WARRANTY PROGRAM DOES NOT APPLY TO
TRIPODS AND RODS. Robert Bosch Tool Corporation (“Seller”)
warrants tripods and leveling rods for a period of one (1) year
from date of purchase.
THIS LIMITED WARRANTY DOES NOT APPLY TO OTHER
ACCESSORY ITEMS AND RELATED ITEMS. THESE ITEMS
RECEIVE A 90 DAY LIMITED WARRANTY.
To make a claim under this Limited Warranty, you must return
the complete product, transportation prepaid. For details to make
a claim under this Limited Warranty please visit www.boschtools.
com or call 1-877-267-2499.
ANY IMPLIED WARRANTIES SHALL BE LIMITED IN
DURATION TO ONE YEAR FROM DATE OF PURCHASE.
SOME STATES IN THE U.S., AND SOME CANADIAN
PROVINCES DO NOT ALLOW LIMITATIONS ON HOW
LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE
LIMITATION MAY NOT APPLY TO YOU.
IN NO EVENT SHALL SELLER BE LIABLE FOR ANY
INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING
BUT NOT LIMITED TO LIABILITY FOR LOSS OF PROFITS)
ARISING FROM THE SALE OR USE OF THIS PRODUCT.
SOME STATES IN THE U.S., AND SOME CANADIAN
PROVINCES DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY
TO YOU.
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS
WHICH VARY FROM STATE TO STATE IN THE U.S.,
OR PROVINCE TO PROVINCE IN CANADA AND FROM
COUNTRY TO COUNTRY.
THIS LIMITED WARRANTY APPLIES ONLY TO PRODUCTS
SOLD WITHIN THE UNITED STATES OF AMERICA, CANADA
AND THE COMMONWEALTH OF PUERTO RICO. FOR
WARRANTY COVERAGE WITHIN OTHER COUNTRIES,
CONTACT YOUR LOCAL BOSCH DEALER OR IMPORTER.