PARTY.  Caution – The use of other operating or adjusting

10 | English 
1 609 92A 0KX | (15.5.14)
Bosch Power Tools
Technical Data
Assembly
Inserting/Replacing the Batteries
Alkali-manganese batteries are recommended for the mea-
suring tool.
To open the battery compartment 3, turn the latch 2 in clock-
wise direction to position 
 and pull off the battery lid. 
Insert the batteries provided. When inserting, pay attention 
to the correct polarity according to the representation on the 
inside of the battery compartment.
Position the battery lid to the bottom of the housing and then 
push it upward. To lock the battery lid, turn the latch 2 in anti-
clockwise direction to the   position.
When the laser beams flash slowly during operation, the bat-
teries are low. When the flashing begins, the measuring tool 
can be operated for approx. 8 h.
Always replace all batteries at the same time. Only use batter-
ies from one brand and with the identical capacity.
 Remove the batteries from the measuring tool when 
not using it for extended periods. When storing for 
extended periods, the batteries can corrode and self-
discharge.
Operation
Initial Operation
 Protect the measuring tool against moisture and direct 
sun light.
 Do not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do 
not leave it in vehicles for a long time. In case of large vari-
ations in temperature, allow the measuring tool to adjust to 
the ambient temperature before putting it into operation. 
In case of extreme temperatures or variations in tempera-
ture, the accuracy of the measuring tool can be impaired.
 Avoid heavy impact to or falling down of the measuring 
tool. Damage to the measuring tool can impair its accura-
cy. After heavy impact or shock, compare the laser lines or 
plumb beams with a known horizontal or vertical reference 
line or with already checked plumb points.
 Switch the measuring tool off during transport. When 
switching off, the levelling unit, which can be damaged in 
case of intense movement, is locked.
Switching On and Off
To switch on the measuring tool, push the On/Off switch 4 
upward so that “I” is indicated on the switch. Immediately 
after switching on, the measuring tool sends a laser beam out 
of each exit opening 1.
 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 unattend-
ed and switch the measuring tool off after use. Other 
persons could be blinded by the laser beam.
To switch off the measuring tool, push the On/Off switch 4 
downward so that “0” is indicated on the switch. When 
switching off, the levelling unit is locked.
Setting the Automatic Switch-off 
By default, the measuring tool automatically shuts off 
20 minutes after being switched on.
The automatic switch-off can be set from 20 minutes to 
8 hours. For this, switch the measuring tool on, then immedi-
ately off, and then on again within 4 s. To confirm the change, 
all laser beams will flash quickly for 2 s after switching on the 
second time.
When switching on the measuring tool the next time, the auto-
matic switch-off is set to 20 minutes again.
Working with Automatic Levelling
Position the measuring tool on a level and firm support, attach 
it to the holder 8 or to the tripod 18.
After switching on, the automatic levelling function automati-
cally compensates irregularities within the self-levelling range 
of ±5° (longitudinal axis) and ±3° (lateral axis). The levelling 
is finished as soon as the laser points do not move any more.
If the automatic levelling function is not possible, e.g. be-
cause the surface on which the measuring tool stands devi-
ates by more than 5° or 3° from the horizontal plane, the laser
Point Laser
GPL 5
Article number
3 601 K66 2..
Working range
30 m
Levelling Accuracy
±0.3 mm/m
Self-levelling range (typical) 
alongside the
– longitudinal axis
– lateral axis
±5°
±3°
Levelling duration, typically
<4 s
Operating temperature
–10 °C...+40 °C
Storage temperature
–20 °C...+70 °C
Relative air humidity, max.
90 %
Laser class
2
Laser type
635 nm, <1 mW
Tripod mount
1/4"
Batteries
3 x 1.5 V LR06 (AA)
Operating time, approx.
24 h
Weight according to 
EPTA-Procedure 01/2003
0.25 kg
Dimensions (length x width x 
height)
104 x 40 x 80 mm
Degree of protection
IP 5X
The measuring tool can be clearly identified with the serial number 7 on 
the type plate.
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Bosch Power Tools
1 609 92A 0KX | (15.5.14)
beams flash rapidly. In this case, bring the measuring tool to 
the level position and wait for the self-levelling to take place. 
As soon as the measuring tool is within the self-levelling range 
of ±5° or ±3° respectively, all laser beams light up continu-
ously again.
In case of ground vibrations or position changes during oper-
ation, the measuring tool is automatically levelled in again. To 
avoid errors by moving the measuring tool, check the position 
of the laser beams with regard to the reference points upon 
re-levelling.
Levelling Accuracy
Influences on Accuracy
The ambient temperature has the greatest influence. Espe-
cially temperature differences occurring from the ground up-
ward can divert the laser beam.
As thermal fluctuation is largest close to the ground, the 
measuring tool, if possible, should be mounted on a commer-
cially available tripod and placed in the centre of the working 
area.
Apart from exterior influences, device-specific influences 
(such as heavy impact or falling down) can lead to deviations. 
Therefore, check the accuracy of the measuring tool each 
time before starting your work.
Should the measuring tool exceed the maximum deviation 
during one of the tests, please have it repaired by a Bosch af-
ter-sales service.
When the levelling accuracy of the horizontal laser beams for 
the lateral and longitudinal axis is within the maximum allow-
able deviation, then the levelling accuracy for the plumb 
beams (vertical axis) is thus also checked.
Checking the Horizontal Levelling Accuracy of the Lateral 
Axis
A free measuring distance of 20 m on a firm surface in front of 
a wall is required for the check.
– Mount the measuring tool onto the holder or a tripod, or 
place it on a firm and level surface at a distance of 20 m to 
the wall. Switch the measuring tool on.
– Direct one of the two lateral laser beams, that run along-
side the lateral axis of the measuring tool, at the wall. Allow 
the measuring tool to level in. Mark the centre of the laser 
beam on the wall (point 
I).
– Rotate the measuring tool by approx. 180° without chang-
ing its height. Allow it to level in and mark the centre point 
of the other lateral laser beam on the wall (point 
II). Take 
care that point 
II is as vertical as possible above or below 
point 
I.
– The  difference  d of both marked points 
I and II on the wall 
results in the actual height deviation of the measuring tool 
alongside the lateral axis.
On the measuring distance of 2 x 20 m = 40 m, the maximum 
allowable deviation is: 40 m x ±0,3 mm/m = ±12 mm.
Thus, the difference d between points 
I and II may not exceed 
12 mm (max.).
Checking the Horizontal Levelling Accuracy of the 
Longitudinal Axis
A free measuring distance of 20 m on a firm surface between 
two walls A and B is required for the check.
– Mount the measuring tool onto the holder or a tripod, or 
place it on a firm and level surface close to wall A. Switch 
the measuring tool on.
– Direct the horizontal laser beam, which runs parallel to the 
longitudinal axis of the measuring tool, at the close wall A. 
Allow the measuring tool to level in. Mark the centre of the 
laser beam on the wall (point 
I).
20 m
d
180˚
A
B
20 m
A
B
180˚
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1 609 92A 0KX | (15.5.14)
Bosch Power Tools
– Turn the measuring tool around by 180°, allow it to level in 
and mark the centre point of the laser beam on the oppo-
site wall B (point 
II).
– Without turning the measuring tool, position it close to wall 
B. Switch the measuring tool on and allow it to level in.
– Align the height of the measuring tool (using the tripod or 
by underlaying, if required) in such a manner that the cen-
tre point of the laser beam is projected exactly against the 
previously marked point
II on wall B.
– Rotate the measuring tool by 180° without changing the 
height. Allow it to level in and mark the centre point of the 
laser beam on wall A (point 
III). Take care that point III is 
as vertical as possible above or below point 
I.
– The difference d of both marked points
I and III on wall A 
results in the actual height deviation of the measuring tool 
alongside the longitudinal axis.
On the measuring distance of 2 x 20 m = 40 m, the maximum 
allowable deviation is: 40 m x ±0,3 mm/m = ±12 mm. 
Thus, the difference d between points 
I and III may not ex-
ceed 12 mm (max.).
Working Advice
 Always use the centre of the laser point for marking. 
The size of the laser point changes with the distance.
Attaching with the Holder
To fasten the measuring tool on the holder 8, screw the lock-
ing screw 9 of the holder into the 1/4" tripod mount 6 on the 
measuring tool and tighten. To rotate the measuring tool on 
the holder, slightly loosen the screw 9.
– Rotate the measuring tool on the holder 8 sideward or 
toward the rear to make the bottom plumb beam visible.
– Rotate the measuring tool on the holder 8 to project 
heights with the horizontal laser beam.
With the holder 8, the measuring tool can be attached as
follows:
– Mount the holder 8 to the tripod 18 or a commercially 
available camera tripod via the 1/4" tripod mount 13. For 
fastening to a commercially available construction tripod, 
use the 5/8" tripod mount 14.
– The holder 8 can be fastened to steel parts via the magnets 
12.
– The holder 8 can be fastened to drywalls or wood walls 
with screws. For this, insert screws with a minimum length 
of 60 mm into the screw holes 10 of the holder.
– The holder 8 can also be fastened to pipes or similar beams 
using a commercially available strap by threading it 
through the opening 11 for strap attachment.
Working with the Tripod (Accessory)
A tripod 18 offers a stable, height-adjustable measuring sup-
port. Place the measuring tool via the tripod mount 6 onto the 
1/4" male thread of the tripod and screw the locking screw of 
the tripod tight.
Working with the Measuring Plate (Accessory)
With the measuring plate 15, it is possible to project the laser 
mark onto the floor or the laser height onto a wall.
With the zero field and the scale, the offset or drop to the re-
quired height can be measured and projected at another loca-
tion. This eliminates the necessity of precisely adjusting the 
measuring tool to the height to be projected.
The measuring plate 15 has a reflective coating that enhances 
the visibility of the laser beam at greater distances or in 
intense sunlight. The brightness intensification can be seen 
only when viewing, parallel to the laser beam, onto the meas-
uring plate.
Laser Viewing Glasses (Accessory)
The laser viewing glasses filter out the ambient light. This 
makes the red light of the laser appear brighter for the eyes.
 Do not use the laser viewing glasses as safety goggles. 
The laser viewing glasses are used for improved visualisa-
tion 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 colour perception.
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.
Wipe off debris using a moist and soft cloth. Do not use any 
cleaning agents or solvents.
Regularly clean the surfaces at the exit opening of the laser in 
particular, and pay attention to any fluff or fibres.
In all correspondence and spare parts orders, please always 
include the 10-digit article number given on the type plate of 
the measuring tool.
A
B
d
180˚
A
B
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Bosch Power Tools
1 609 92A 0KX | (15.5.14)
In case of repairs, send in the measuring tool packed in its 
protective pouch 16.
After-sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare 
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch’s application service team will gladly answer questions 
concerning our products and their accessories.
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: (0844) 7360109
E-Mail: boschservicecentre@bosch.com
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch.com.au
Republic of South Africa
Customer service
Hotline: (011) 6519600
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-Mail: bsctools@icon.co.za
KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: (031) 7012120
Fax: (031) 7012446
E-Mail: bsc.dur@za.bosch.com
Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: (021) 5512577
Fax: (021) 5513223
E-Mail: bsc@zsd.co.za
Bosch Headquarters
Midrand, Gauteng
Tel.: (011) 6519600
Fax: (011) 6519880
E-Mail: rbsa-hq.pts@za.bosch.com
People’s Republic of China
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Service Hotline: 4008268484
Fax: (0571) 87774502
E-Mail: contact.ptcn@cn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Hong Kong Co. Ltd.
21st Floor, 625 King’s Road
North Point, Hong Kong
Customer Service Hotline: +852 2101 0235
Fax: +852 2590 9762
E-Mail: info@hk.bosch.com
www.bosch-pt.com.hk
Indonesia
PT Robert Bosch
Palma Tower 9
th
 & 10
th
 Floor
Jl. Let. Jend. TB Simatupang II S/06
Jakarta Selatan 12960
Indonesia
Tel.: (021) 3005 6565
Fax: (021) 3005 5801
E-Mail: boschpowertools@id.bosch.com
www.bosch-pt.co.id
Philippines
Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio Global City,
1634 Taguig City, Philippines
Tel.: (02) 8703871
Fax: (02) 8703870
matheus.contiero@ph.bosch.com
www.bosch-pt.com.ph
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1 609 92A 0KX | (15.5.14)
Bosch Power Tools
Bosch Service Center:
9725-27 Kamagong Street
San Antonio Village
Makati City, Philippines
Tel.: (02) 8999091
Fax: (02) 8976432
rosalie.dagdagan@ph.bosch.com
Malaysia
Robert Bosch (S.E.A.) Sdn. Bhd.
No. 8A, Jalan 13/6
G.P.O. Box 10818
46200 Petaling Jaya
Selangor, Malaysia
Tel.: (03) 79663194
Fax: (03) 79583838
cheehoe.on@my.bosch.com
Toll-Free: 1800 880188
www.bosch-pt.com.my
Thailand
Robert Bosch Ltd.
Liberty Square Building
No. 287, 11 Floor
Silom Road, Bangrak
Bangkok 10500
Tel.: 02 6393111, 02 6393118
Fax: 02 2384783
Robert Bosch Ltd., P. O. Box 2054
Bangkok 10501, Thailand
www.bosch.co.th
Bosch Service – Training Centre
La Salle Tower Ground Floor Unit No.2
10/11 La Salle Moo 16
Srinakharin Road
Bangkaew, Bang Plee
Samutprakarn 10540
Thailand
Tel.: 02 7587555
Fax: 02 7587525
Singapore
Robert Bosch (SEA) Pte. Ltd.
11 Bishan Street 21
Singapore 573943
Tel.: 6571 2772
Fax: 6350 5315
leongheng.leow@sg.bosch.com
Toll-Free: 1800 3338333
www.bosch-pt.com.sg
Vietnam
Robert Bosch Vietnam Co. Ltd
10/F, 194 Golden Building
473 Dien Bien Phu Street
Ward 25, Binh Thanh District
84 Ho Chi Minh City
Vietnam
Tel.: (08) 6258 3690 ext. 413
Fax: (08) 6258 3692
hieu.lagia@vn.bosch.com
www.bosch-pt.com

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