Bosch GLM 150 - Инструкция по эксплуатации - Страница 24

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Bosch Power Tools

Sighting with the Optical Sight (GLM 250 VF) 
(see figure N)

The sighting line through the optical sight and the laser beam 
run parallel to each other. This allows for precise sighting over 
long distances, when the laser dot is no longer visible with the 
naked eye.

For sighting, view through the viewfinder of the optical sight 

10

. Take care that the optical sight window 

25

 is not obstruct-

ed and clean.

Note: 

For close vicinities, the actual and the displayed target 

point are not identical.

Sighting with the Alingment Aid (see figure O)

The alignment aid 

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 supports sighting over larger distances. 

For this, view alongside the alignment aid on the side of the 
measuring tool. The laser beam runs parallel to this sighting 
line.

Working with the Tripod (Accessory)

The use of a tripod is particularly necessary for larger distanc-
es. Position the measuring tool with the 1/4" thread 

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 onto 

the quick-change plate of the tripod 

30

 or a commercially 

available camera tripod. Tighten the measuring tool with the 
locking screw of the quick-change plate.

Set the corresponding reference level for measurement with 
a tripod by pushing button 

8

 (the reference level is the 

thread).

Troubleshooting  –  Causes and Corrective
Measures

The measuring tool monitors the correct 
function for each measurement. When a de-
fect is determined, only the symbol shown 
aside flashes in the display. In this case, or 
when the above mentioned corrective 

measures cannot correct an error, have the measuring tool 
checked by an after-sales service agent for Bosch power 
tools.

Accuracy Check of the Measuring Tool

The accuracy of the measuring tool can be checked as follows:

– Select a permanently unchangeable measuring section 

with a length of approx. 1 to 10 metres; its length must be 
precisely known (e. g. the width of a room or a door open-
ing). The measuring distance must be indoors; the target 
surface for the measurement must be smooth and reflect 
well.

– Measure  the  distance  10 times after another.

The deviation of the individual measurements from the mean 
value must not exceed ± 1.5 mm (max.). Log the measure-
ments, so that you can compare their accuracy at a later point 
of time.

Maintenance and Service

Maintenance and Cleaning

Store and transport the measuring tool only in the supplied 
protective pouch.

Keep the measuring tool clean at all times.

Do not immerse the measuring tool in water or other fluids.

Cause

Corrective Measure

Temperature warning indicator (i) flashing; measure-
ment not possible

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

Wait until the measuring 
tool has reached the
operating temperature

Battery low indicator (f) appears

Battery voltage decreasing 
(measurement still possible)

Replace batteries/
rechargeable batteries

Battery low indicator (f) flashing; measurement not 
possible

Battery voltage too low

Replace batteries/
rechargeable batteries

The  indications  “ERROR”  and  “– – – – – ”  are  indicated  in 
the display

The angle between the laser beam 
and the target is too acute.

Enlarge the angle 
between the laser beam 
and the target

The target surface reflects too in-
tensely (e. g. a mirror) or insuffi-
ciently (e. g. black fabric), or the 
ambient light is too bright.

Work with the laser tar-
get plate 

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 (accessory)

The laser beam outlet 

27

 or the 

reception lens 

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 are misted up 

(e. g. due to a rapid temperature 
change).

Wipe the laser beam out-
let 

27

 and/or the recep-

tion lens 

26

 dry using a 

soft cloth

Calculated value is greater than 
999 999 m/m

2

/m

3

.

Divide calculation into 
intermediate steps

The indication “ERROR” flashes at the top in the display

Addition/Subtraction of measured 
values with different units of mea-
sure

Only add/subtract 
measured values with 
the same units of mea-
sure

Measuring result not plausible

The target surface does not reflect 
correctly (e. g. water, glass).

Cover off the target 
surface

The laser beam outlet 

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 or the re-

ception lens 

26

 are covered.

Make sure that the laser 
beam outlet 

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 or the re-

ception lens 

26

 are un-

obstructed

Obstruction in path of laser beam Laser point must be 

completely on target 
surface.

Wrong reference level set

Select reference level 
that corresponds to 
measurement

Cause

Corrective Measure

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