Bosch Power Tools GLM 80, GLM 80 + R 60 User manual

GLM

80 | 80+R 60

Professional

 BOSCH

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(9)

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(19)

(8)

(i) (j)

(7)

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Safety Instructions

All instructions must be
read and observed in order
for the measuring tool to
function safely. The safe-

guards 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.

u 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 warning label
(marked in the illustration of the measuring tool on the
graphics page with number (20)).

Laser Radiation

Do not stare into beam

Class 2 laser product

u If the text on the warning label is not in your native

language, cover it with the label supplied, which is in
your language, before initial commissioning.

Do not direct the laser beam at persons or
animals and do not look directly into the
laser beam or at its reflection. Doing so

could lead to blindless, or could cause acci-

dents or damage to the eyes.

u If laser radiation hits your eye, you must close your

eyes and immediately turn your head away from the
beam.

u Do not make any modifications to the laser equip-

ment.

u 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.

u 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.

u 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.

u Do not let children use the laser measuring tool unsu-

pervised. They could accidentally dazzle someone.

u Do not use the measuring tool in explosive atmo-

spheres which contain flammable liquids, gases or
dust. Sparks may be produced inside the measuring tool,

which can ignite dust or fumes.

Protect the measuring tool against heat,
e.g. including prolonged sun exposure, fire,
water, and moisture. Danger of explosion.

u Do not use the measuring tool with the Micro USB

cable connected.

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Safety instructions for chargers

u This charger is not intended for

use by children or persons with
physical, sensory or mental limita­tions or a lack of experience or
knowledge. This charger 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 charger and they under­stand the associated dangers. Oth-

erwise, there is a risk of operating er­rors and injuries.

u Supervise children during use,

cleaning and maintenance. This will
ensure that children do not play with
the charger.

Do not expose the charger to rain or wet condi-

tions. Water entering a power tool will increase the risk of

electric shock.

u Charge the measuring tool only with the supplied

charger.

u Keep the charger clean. Dirt poses a risk of electric

shock.

u Always check the charger, cable and plug before use.

Stop using the charger if you discover any damage. Do
not open the charger yourself, and have it repaired
only by a qualified specialist using only original re­placement parts. Damaged chargers, cables and plugs

increase the risk of electric shock.

u Do not operate the charger on an easily ignited sur-

face (e.g. paper, textiles, etc.) or in a flammable envir­onment. There is a risk of fire due to the charger heating

up during operation.

u In case of damage and improper use of the battery, va-

pours may also be emitted. Ensure the area is well-vent­ilated and seek medical attention should you experience
any adverse effects. The vapours may irritate the respirat­ory system.

Product Description and
Specifications

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.

Product features

The numbering of the product features refers to the diagram
of the measuring tool on the graphics page.

Display

(1)

Measuring button

(2)

Button for grade measurement/calibration

(3)

Button for changing function/basic settings

(4)

Minus button

(5)

Button for results/timer function

(6)

Button for list of measured values/saving constant

(7)

Button for memory deletion/switching on or off

(8)

Measuring pin

(9)

Reference level selection button

(10)

Plus button

(11)

Button for distance, area and volume measurement

(12)

Charging socket cover

(13)

Micro USB port

(14)

Carrying strap lug

(15)

Laser beam output

(16)

Reception lens

(17)

Serial number

(18)

1/4" thread

(19)

Laser warning label

(20)

Charging connector

(21)

Micro USB cable

(22)
(23)
(24)
(25)
(26)
(27)
(28)
(29)

A)
B)

Display elements
(a)
(b) "ERROR" indicator
(c)

B)

Charger
Protective bag
Measuring rail
Locking lever for measuring bar
Tripod
Laser viewing glasses
Laser target plate

Press and hold a button to activate its additional function.
Accessories shown or described are not included with the

product as standard.

Measured value lines

Result line

B)

B)

B)

B)

B)

A)

A)

A)

A)

A)

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1

Digital spirit level/position of measured value list

(d)

entry
Indicator for measured value list

(e)

Measuring functions

(f)

Length measurement
Area measurement

Volume measurement
Continuous measurement

1

Indirect height measurement

(g)
(h)
(i)
(j)

Double indirect height measurement

2

1

Indirect length measurement
Timer function
Wall area measurement

Grade measurement
Battery charge indicator
Laser switched on
Reference level of measurement
Temperature warning

Technical data

Digital laser measure GLM 80 GLM 80+R 60

Article number

Distance measurement

Measuring range (typical) 0.05–80m
Measuring range (typical, unfavourable conditions) 35m
Measuring accuracy (typical) ± 1.5mm
Measuring accuracy (typical, unfavourable conditions) ±2.5mm
Smallest display unit 0.1mm 0.1mm

Indirect distance measurement and level

Measuring range –60° to +60° –60° to +60°

Grade measurement

Measuring range 0°–360° (4 x 90°)
Measuring accuracy (typical) 0.2°D)
Smallest display unit 0.1° 0.1°

General

Operating temperature -10°C to +50°C
Storage temperature -20°C to +50°C -20°C to +50°C
Permitted charging temperature range +5°C to +40°C +5°C to +40°C
Max. relative air humidity 90% 90%
Max. altitude 2000 m 2000 m
Pollution degree according to IEC61010-1 2
Laser class 2 2
Laser type 635 nm, < 1mW 635 nm, < 1mW
Laser beam diameter (at 25 °C) approx.
– 10m distance 6mm
– 80m distance 48mm
Adjustment accuracy of the laser to the housing approx.
– Vertical ±2mm/m
– Horizontal ±10mm/m
Automatic switch-off after approx.
– Laser 20s 20s
– Measuring tool (without measurement) 5min 5min
Weight according to EPTA-Procedure 01:2014 0.14kg 0.14kg
Dimensions 51 x 111 x 30mm 51 x 111 x 30mm

3601K723.. 3601K723..

A)

B)

A)

B)

C)

E)

F)

G)

E)

E)

H)

H)

0.05–80m
35m

± 1.5mm

±2.5mm

0°–360° (4 x 90°)

±0.2°D)

-10°C to +50°C

6mm

48mm

±2mm/m

±10mm/m

A)

B)

A)

B)

C)

E)

F)

G)

2

E)

E)

H)

H)

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Digital laser measure GLM 80 GLM 80+R 60

Protection rating IP 54 (dust and splash-proof) IP 54 (dust and splash-proof)

Measuring rail

Article number –

3601K79000

Dimensions – 58 x 610 x 30mm

Battery Li-ion Li-ion

Rated voltage 3.7 V 3.7 V
Capacity 1.25 Ah 1.25 Ah
Number of battery cells 1 1
Individual measurements per battery charge approx. 25000

I)

25000

Charger

Article number

26091207..

1600A013..

26091207..

1600A013..

Charging time approx. 3 h approx. 3 h
Battery charging voltage 5.0 V 5.0 V
Charge current 1000 mA 1000 mA
Protection class

A) For measurements from the front edge of the measuring tool, 100% reflectivity of the target (e.g. a white wall), weak backlighting and 25°C

operating temperature. In addition, a deviation influence of ± 0.05mm/m needs to be taken into account.

B) For measurements from the rear edge of the measuring tool, 10–100 % reflectivity of the target, strong backlighting and 25°C operating

temperature. In addition, a deviation influence of ± 0.29mm/m needs to be taken into account.
C) For measurements that use the back of the device as a reference, the max. measuring range amounts to ± 60°
D)

After calibration in accordance with figure H. Additional pitch error of ± 0.01°/degree up to 45°.
E) The width of the laser line depends on the surface characteristics and on the ambient conditions.
F) In continuous measurement mode, the max. operating temperature is +40 °C.
G) Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
H) At 25°C
I) For a new and charged battery without display illumination and sound.

The serial number (18) on the type plate is used to clearly identify your measuring tool.
Please observe the article number on the type plate of your battery charger. The trade names of individual battery chargers may vary.

/ II / II

I)

Initial start-up

Charging the battery

u Use only the chargers listed in the technical data. Only

these chargers are matched to the lithium-ion battery of
your measuring tool.

u The use of chargers from other manufacturers can

lead to defects on the measuring tool; a higher voltage
(e.g. 12 V) from a vehicle charger is not suitable for
charging this measuring tool. The warranty is
rendered void if these instructions are not followed.

u Pay attention to the mains voltage. The voltage of the

power source must match the voltage specified on the
rating plate of the charger.

Note: The battery is supplied partially charged. To ensure
full capacity of the battery, completely charge the battery
before the first use.

The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.

If the lower segment of the battery charge indicator (g)
flashes, only a few more measurements can be made.
Charge the battery.

If the frame around the segments of the battery charge indic­ator (g) flashes, no more measurements are possible. The
measuring tool can only be used for a short time (e.g. to
check entries in the measured value list). Charge the bat­tery.

Connect the measuring tool to the charger (23) using the mi­cro USB cable (22) provided. Plug the charger (23) into the
socket. The charging process will begin.

The battery charge indicator (g) indicates the charging pro­gress. The segments flash successively during charging.
When all segments of the battery charge indicator (g) are
displayed, the battery is fully charged.

If you are not planning to use the power tool again soon, dis­connect the charger from the mains.

The battery can also be charged at a USB port. To do so, con­nect the measuring tool to a USB port using the micro USB
cable. In USB mode (charging mode, data transfer), the
charging time can be noticeably longer.

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The measuring tool cannot be used during the charging pro­cedure.

u Protect the charger against moisture.

Recommendations for optimal handling of the battery in
the measuring tool

Only charge the measuring tool in the permissible temperat­ure range, (see "Technical data", page20). As an example,
do not leave the measuring tool in a vehicle during the sum­mer.
A significantly reduced operating time after charging indic­ates that the battery has deteriorated and must be replaced
by the Bosch after-sales service.
Follow the instructions on correct disposal.

Operation

Start-Up

u Protect the measuring tool from moisture and direct

sunlight.

u Do not expose the measuring tool to any extreme tem-

peratures 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.

u 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 "Checking
accuracy and calibrating the grade measurement (see fig­ureH)", page26) and (see "Accuracy check of the dis­tance measurement", page26).

Switching on/off

u 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.

The following options are available for switching on the
measuring tool:

– Pressing the on/off button (8): The measuring tool is

switched on in the length measurement function. The
laser is not switched on.

– Pressing the measuring button (2): Measuring tool and

laser are switched on. The measuring tool will be in the
length measurement function. When the measuring tool is
inserted in the measuring rail (25), the grade measure­ment function is activated.

u 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 and hold the on/off
button (8).

If no button on the measuring tool is pressed for approx. five
minutes, then the measuring tool will automatically switch it­self off to preserve battery life.

If the angle has not been changed for approx. five minutes
while the measuring tool is in the "grade measurement" oper­ating mode, the tool will automatically switch itself off to pre­serve battery life.

All saved values are retained when the tool is automatically
switched off.

Measuring process

After the measuring tool has been switched on by pressing
the measuring button (2), the tool is always in the length
measurement function by default, or in the grade measure­ment function if the tool has been inserted into the measur­ing rail (25). Other measuring functions can be switched to
by pressing the respective function button (see "Measuring
functions", page23).

Once the measuring tool has been switched on, the rear
edge of the measuring tool is selected as the reference level
for measurement. You can change the reference level by
pressing the reference level selection button(10) (see "Se­lecting the reference level (see figureA)", page22).

Apply the measuring tool with the selected reference level to
the point at which you want to start the measurement (e.g.
wall).

To switch on the laser beam, briefly press the measuring but­ton (2).

u Do not direct the laser beam at persons or animals and

do not stare into the laser beam yourself (even from a
distance).

Aim the laser beam at the target surface. To initiate the
measurement, briefly press the measuring button (2) again.

While the laser beam is continuously switched on, measure­ment will begin after the first press of the measuring button
(2). In the continuous measurement function, measurement
begins as soon as the function is activated.

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. The end of the
measurement is indicated by an audio signal. Upon comple­tion of the measurement, the laser beam is automatically
switched off.

If no measurement has been performed within approx.
20seconds of aim being taken, the laser beam is switched
off automatically to preserve battery life.

Selecting the reference level (see figureA)

You can choose between four different reference levels for
the measurement:

– The rear edge of the measuring tool or the front edge of

the measuring pin (9) when it has been folded out by 90°
(e.g. when applying the tool to outer corners)

– The tip of the measuring pin (9) when it has been folded

180° (e.g. when measuring from a corner)

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– The front edge of the measuring tool (e.g. when measur-

ing from a table edge)

– The centre of the thread (19) (e.g. for tripod measure-

ments)

To select the reference level, press the button (10) until the
required reference level is shown on the display. The rear
edge of the measuring tool is pre-set as the reference level
every time the measuring tool is switched on.

It is not possible to make a retrospective alteration to the ref­erence level for measurements that have already been taken
(e.g. when displaying measured values in the measured
value list).

Basic settings menu

To enter the basic settings menu, press and hold the button
for basic settings (4).

Briefly press the basic settings button (4) to select the indi­vidual menu items.

Press the minus button (5) or the plus button (11) to select
the setting within the menu items.

To exit the basic settings menu, press the measuring button

(2).

Basic settings

Audio signals On

Off

Display illumination On

Off

Automatically
on/off

Digital spirit level On

Off

Display rotation On

Off

Continuous laser beam On

Off

Unit of distance (depending
on country version)

Unit for angle (depending on
country version)

All basic settings except for the continuous laser beam set­ting are saved when switching off the tool.

m, ft, inch, etc.

°, %, mm/m,
inch/ft

Continuous laser beam

u Do not direct the laser beam at persons or animals and

do not stare into the laser beam yourself (even from a
distance).

In this setting, the laser beam remains switched on even
between measurements; measurement simply requires one
brief press of the measuring button (2).

Measuring functions

Simple length measurement

For length measurements, repeatedly press the button (12)

appears on theuntil the indicator for length measurement

display.

Briefly press the measuring button (2) once to
switch on the laser and once to measure.

The measured value is displayed in the result
line (c).

For multiple consecutive length measurements, the results
of the last measurements are shown in the measured value
lines (a).

Area measurement

For area measurements, repeatedly press the button (12)
until the indicator for area measurement appears on the
display.

Then measure the width and length one after the other as
with a length measurement. The laser beam remains
switched on between the two measurements.

Once the second measurement has been com­pleted, the area is automatically calculated and
displayed in the result line (c). The individual
measured values can be found in the measured
value lines (a).

Volume measurement

For volume measurements, repeatedly press the button
(12) until the indicator for volume measurement ap-
pears on the display.

Then measure the width, length and depth one after the
other as with a length measurement. The laser beam remains
switched on between the three measurements.

Once the third measurement has been com­pleted, the volume is automatically calculated
and displayed in the result line (c). The indi­vidual measured values can be found in the
measured value lines (a).

Values over 999,999m3 cannot be displayed; "ERROR" will
instead appear on the display. Divide the volume to be meas­ured into individual measurements, the resulting values of
which you can calculate separately and then combine into an
overall total.

Continuous measurement and minimum/maximum
measurement (see figureB)

In continuous measurement mode, the measuring tool can
be moved relative to the target, during which the measured
value will be updated every half a second. You can, for ex-

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ample, move a desired distance away from a wall while read­ing off the current distance at all times.

For continuous measurements, repeatedly press the button
for changing function (4) until the indicator for continuous

measurement appears on the display. To start the continu­ous measurement, press the measuring button (2).

The minimum measurement is used to determine the
shortest distance from a fixed reference point. For example,
it can help in determining verticals or horizontals.

The maximum measurement is used to determine the
greatest distance from a fixed reference point. For example,
it can help in determining diagonals.

The current measured value is shown in the
result line (c). The maximum ("max") and min­imum ("min") measured value appear in the
measured value lines (a). It is then always

overwritten if the current length measurement
value is smaller or larger than the previous minimum or max­imum value.

Press the memory deletion button (8) to erase the previous
minimum or maximum values.

Press the measuring button (2) to end the continuous meas­urement. The last measured value is displayed in the result
line (c). Pressing the measuring button (2) again starts a
new continuous measurement.

Continuous measurement automatically switches off after
fiveminutes. The last measured value remains displayed in
the result line (c).

Indirect distance measurement

The indirect distance measurement is used to determine dis­tances that cannot be measured directly, due to an obstacle
that would impede the path beam or the absence of a target
surface that could serve as a reflector. This measuring pro­cedure can only be employed vertically. Any horizontal devi­ation will lead to measurement errors.

The laser beam remains switched on between the individual
measurements.

For indirect length measurements, three measuring modes
are available. Each measuring mode can be used for determ­ining different distances.

a) Indirect height measurement (see figureC)
Repeatedly press the button for changing function (4) until

1

appears onthe indicator for indirect height measurement

the display.
Ensure that the measuring tool is at the same height as the

lower measuring point. Then tilt the measuring tool around
the reference level and measure distance (1) as for a length
measurement.

Once the measurement is complete, the result

for the required distance "X" is displayed in

the result line (c). The measured values for dis-

tance "1" and angle "α" can be found in the

measured value lines (a).

b) Double indirect height measurement (see figureD)
Repeatedly press the button for changing function (4) until

1

2

ap-the indicator for double indirect height measurement

pears on the display.
Measure distances 1 and 2 in succession as for a length

measurement.

Once the measurement is complete, the result
for the required distance X is displayed in the
result row (c). The measured values for dis­tances 1 and 2 and angle α can be found in the
measured value rows (a).

Ensure that the reference level for the measurement (e.g.
the rear edge of the measuring tool) remains in exactly the
same place for all the individual measurements in a single
measuring process.

c)

Indirect length measurement (see figureE)

Repeatedly press the button for changing function (4) until
the indicator for indirect length measurement appears on

1

the display.
Ensure that the measuring tool is at the same height as the

required measuring point. Then tilt the measuring tool
around the reference level and measure distance "1" as for a
length measurement.

Once the measurement is complete, the result
for the required distance "X" is displayed in
the result line (c). The measured values for dis­tance "1" and angle "α" can be found in the
measured value lines (a).

Wall area measurement (see figureF)

The wall area measurement is used to determine the sum of
multiple individual areas with a common height.

In the illustrated example, the total area of several walls that
have the same ceiling height A but different lengths B is to
be determined.

For wall area measurements, repeatedly press the button for
changing function (4) until the indicator for wall area meas­urement appears on the display.

Measure the ceiling height A as with a length measurement.
The measured value ("cst") is displayed in the top measured
value line (a). The laser remains switched on.

Then measure the length B1 of the first wall.
The area is automatically calculated and dis­played in the result line (c). The last measured
value for length can be found in the middle
measured value line.(a). The laser remains

switched on.

Now measure the length B2 of the second wall.
The individual measured value displayed in the
middle measured value line (a) is added to the
length B1. The sum of the two lengths ("sum",
displayed in the bottom measured value line

(a)) is multiplied by the saved height A. The total area value
is displayed in the result line (c).

You can measure any number of lengths Bx, which will be
automatically added and multiplied by the height A.

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The requirement for a correct area calculation is that the first
measured length (for example the ceiling height A) is
identical for all sub-areas.

Grade measurement (see figureG)

Press the button for grade measurement (3) to bring up the
indicator for grade measurement on the display. The rear
of the measuring tool serves as the reference level. Press the
button for grade measurement (3) again to use the sides of
the measuring tool as a reference level and rotate the display
view by 90°.

Press the measuring button (2) to fix the measured value
and transfer it to the measured value memory. Press the
measuring button (2) again to continue the measurement.

If the display flashes during measurement, the measuring
tool has been tipped too heavily to the side.

If the "digital spirit level" function is activated in the basic
settings, the grade value is also displayed in the other meas­uring functions in line (d) of the display (1).

Timer function

The timer function is useful when the measuring tool should
be kept stationary during measurement, for example.

Press and hold the button for the timer function (6) to bring
up the indicator on the display.

The time period between triggering the timer and starting
measurement is displayed in the measured value line (a).
The time period can be set between 1–60 seconds by press­ing the plus button (11) or minus button (5).

The measurement is made automatically after

the set time period has expired.

The timer function can also be used for dis-

tance measurements within other measuring
functions (e.g. area measurement). It is not possible to add
or subtract measuring results or carry out continuous meas­urement.

List of the last measured values

The measuring tool stores the last 20 measured values and
their calculations and displays them in reverse order (with
the most recent measured value displayed first).

To retrieve the saved measurements, press the

button (7). The result of the last measurement

appears on the display, along with the indic-

ator for the measured values list (e) and with

storage space for the numbering of the dis­played measurements.

If no further measurements are saved upon pressing the but­ton (7) again, the measuring tool switches back to the last
measuring function. Press one of the buttons for the measur­ing functions to exit the list of measured values.

To permanently save the currently displayed measured
length value as a constant, press and hold the button for the
list of measured values (7) until "CST" is shown on the dis­play. An entry in the list of measured values cannot be retro­spectively saved as a constant.

To use a measured length value in a measuring function (e.g.
area measurement), press the button for the list of meas-

ured values (7), select the desired entry and confirm it by
pressing the results button (6).

Deleting measured values

Briefly pressing the button (8) will delete the last measured
value in all measuring functions. Repeatedly pressing the
button briefly will delete the individual measured values in
reverse order.
To delete the currently displayed entry in the list of meas­ured values, briefly press the button (8). To delete the com­plete list of measured values and the constant "CST", press
and hold the measured value list button (7) and at the same
time briefly press the button (8).
In the wall area measurement function, a brief first press of
the button (8) will delete the last individual measured value;
a second press will delete all lengths BX; a third will delete
the ceiling height A.

Adding measured values

To add measured values together, first perform any meas­urement or select an entry from the list of measured values.
Next, press the plus button (11). "+" will appear on the dis­play as confirmation. Then perform a second measurement
or select another entry from the measured value list.

Press the results button (6) to retrieve the sum
of both measurements. The calculation is
shown in the measured value lines (a) and the
sum is displayed in the result line (c).

When the sum has been calculated, you can add more meas­ured values or measured value list entries to this result if you
press the plus button (11) before each measurement. Press
the results button (6) to end the addition.

Information on addition:
– Mixtures of length, area and volume values cannot be ad-

ded together. For example, if a length value and an area
value are added together, "ERROR" will appear briefly on
the display when the results button (6) is pressed. The
measuring tool will then switch back to the most recently
active measuring function.

– The result of a measurement (e.g. volume value) is always

added; for continuous measurements, the measured
value displayed in the result line (c) is added. It is not
possible to add individual measured values from the
measured value lines (a).

Subtracting measured values

To subtract measured values, press the minus
button (5); "-" will appear on the display as
confirmation. The subsequent steps are the
same as for the "Adding measured values" sec­tion.

Practical advice

General advice

The reception lens (17) and the laser beam output (16)
must not be covered during the measuring process.

The measuring tool must not be moved during a measure­ment (with the exception of the continuous measurement

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and grade measurement functions). For this reason, place
the measuring tool against or on a firm surface whenever
possible.

Influences on the measuring range

The measuring range depends on the lighting conditions and
the reflective properties of the target surface. For better vis­ibility of the laser beam when working outdoors and in bright
sunlight, use the laser viewing glasses (28) (accessory) and
the laser target plate (29) (accessory) or shade the target
area.

Influences on the measurement result

Due to physical effects, the possibility of inaccurate meas­urements when measuring various surfaces cannot be ex­cluded. These include:

– Transparent surfaces (e.g. glass, water)
– Reflective surfaces (e.g. polished metal, glass)
– Porous surfaces (e.g. insulating materials)
– Structured surfaces (e.g. roughcast, natural stone).
If necessary, use the laser target plate (29) (accessory) on

these surfaces.
Inaccurate measurements are also possible where the laser

is pointed at target surfaces diagonally.
Layers of air at different temperatures and indirectly re-

ceived reflections can also influence the measured value.

Checking accuracy and calibrating the grade
measurement (see figureH)

Regularly check the accuracy of the grade measurement.
This is accomplished by means of a reverse measurement.
To do this, lay the measuring tool on a table and measure the
inclination. Turn the measuring tool by 180° and measure
the inclination again. The difference between the displayed
values must not exceed 0.3°.

In case of greater deviation, the measuring tool must be re­calibrated. To do this, press and hold the grade measure­ment button (3). Follow the directions on the display.

Accuracy check of the distance measurement

You can check the accuracy of the measuring tool as follows:
– Choose a measuring section of approx. 1–10 m in length

that is permanently unchanged, the exact length of which
is known to you (e.g. room width, door opening). The
measuring section must be indoors, and the target sur­face of the measurement must be smooth and reflect

well.
– Measure the section ten times in succession.
The deviation between the individual measurements and the

mean value must not exceed ± 2mm. Record the measure­ments in order to be able to compare the accuracy later on.

Working with the tripod (accessory)

The use of a tripod is particularly necessary for larger dis­tances. Place the measuring tool with the 1/4" thread (19)
on the quick-release plate of the tripod (27) or a conven­tional camera tripod. Tighten it using the locking screw of the
quick-release plate.

Set the reference level for measurements with a tripod by
pressing the button (10) accordingly (thread reference
level).

Working with the measuring rail (see figuresI–K)

The measuring rail (25) can be used for a more exact grade
measurement result. Distance measurements are not pos­sible with the measuring rail.

Insert the measuring tool into the measuring
rail (25) as shown and lock the measuring tool
in place with the locking lever (26). Press the
measuring button (2) to activate the "measur­ing rail" operating mode.

Regularly check the accuracy of the grade measurement by
means of a reverse measurement or the levels on the meas­uring rail.

In case of greater deviation, the measuring tool must be re­calibrated. To do this, press and hold the grade measure­ment button (3). Follow the directions on the display.

To end the "measuring rail" operating mode, switch off the
measuring tool and remove it from the measuring rail.

Errors – Causes and Corrective Measures

Cause Corrective measures

Temperature warning(j) flashes, measurement not pos­sible.

The measuring tool is outside
the operating temperature of
–10 °C to +50 °C (in the con­tinuous measurement func­tion, up to +40 °C).

Display shows "ERROR"

Addition/subtraction of
measured values with differ­ent units of measurement.

Angle between laser beam
and target is too acute.

Target surface is too reflect­ive (e.g. mirror) or not re­flective enough (e.g. black
material), or ambient light is
too bright.

The laser beam output (16)
and/or reception lens (17)
are fogged up (e.g. due to a
rapid temperature change).

Calculated value is larger
than 999,999m/m2/m3.

Display shows "> 60°" or "< –60°"

The grade measuring range
for the measuring function or
reference level has been ex­ceeded.

Display shows "CAL" and "ERROR"

Wait until the measuring tool
has reached operating tem­perature.

Only add/subtract measured
values with the same units of
measurement.

Increase the angle between
the laser beam and the target

Use the laser target plate
(29).

Wipe the laser beam output

(16) and/or reception lens
(17) dry with a soft cloth.

Divide the calculation into in­termediate steps.

Perform the measurements
within the specified angle
range.

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Cause Corrective measures

The calibration of the grade
measurement has not been
carried out in the right order
or has not been carried out in
the correct positions.

The surfaces used for calib­ration were not precisely ho­rizontal or vertical.

The measuring tool has
moved or tilted when the
button was pressed.

Battery charge indicator (g), temperature warning (j)
and "ERROR" shown in the display

The temperature of the
measuring tool is outside the
permissible charging temper­ature range.

Battery charge indicator (g) and "ERROR" shown in the
display

The battery charging voltage
is not correct.

Battery charge indicator (g) and clock symbol (f) shown
in the display

Charging time significantly
extended due to the charging
current being too low.

Measurement result implausible

Target surface reflection not
distinct (e.g. water, glass).

Laser beam output (16) and/
or reception lens (17) are
covered.

An incorrect reference level
has been set.

Obstruction in the path of the
laser beam.

The indicator remains unchanged or the measuring tool
reacts unexpectedly when a button is pressed.

Software error. Press the measuring button

Repeat the calibration ac­cording to the instructions
that appear on the display
and in the manual.

Repeat the calibration on a
horizontal or vertical surface
and check the surfaces be­forehand if necessary using a
spirit level.

Repeat the calibration and
hold the measuring tool still
against the surface when
pressing the button.

Wait until the charging tem­perature range has been
reached.

Check whether the connec­tion has been established
correctly and that the micro
USB cable is working prop­erly. If the device symbol
flashes, the battery is defect­ive and must be replaced by
the Bosch after-sales ser­vice.

Only use the original Bosch
micro USB cable.

Cover the target surface.

Keep the laser beam output

(16) and/or reception lens
(17) clear.

Select a reference level that
is appropriate for the meas­urement.

The laser point must be fully
on the target surface.

(2) and the button for
memory deletion/switching

on or off (8) to reset the soft­ware.

Cause

The measuring tool monitors correct function­ing in every measurement. If a defect is detec­ted, the display will indicate only the symbol
shown opposite. In this case, or if the above­mentioned corrective measures cannot rectify

an error, submit the measuring tool to the Bosch after-sales
service via your dealer.

Corrective measures

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 de-

tergents or solvents.
Take particular care of the reception lens (17), 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 (24).

Transport

The contained lithium-ion batteries are subject to the Dan­gerous Goods Legislation requirements. The batteries are
suitable for road-transport by the user without further re­strictions.

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.

Disposal

Measuring tools, chargers, batteries, accessories
and packaging should be recycled in an environ­mentally correct manner.

Do not dispose of measuring tools, chargers or
batteries with household waste.

Battery packs/batteries:
Li-ion:

Please observe the notes in the section on transport (see
"Transport", page28).

u Integrated batteries may only be removed for disposal

by qualified personnel. Opening the housing shell can
destroy the measuring tool.

Before you can remove the battery from the measuing tool,
you will need to use the measuring tool until the battery is
completely discharged. Unscrew the screws on the housing
and remove the housing shell in order to remove the battery.
To prevent a short circuit, disconnect the connectors on the
battery one at a time and then isolate the poles. Even when
fully discharged, the battery still contains a residual capa­city, which can be released in case of a short circuit.

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