Omega Seamaster Aqua Terra Gold & Steel User manual

E / 10

1151
Omega
1270
Omega
1143
Omega
1152
Omega
3303
3313
Omega
1861
Omega
1866
Omega
361
2
Omega
3312
Omega
330
3
3313
Omega
3200
Omega
330
4
Omega
Number of calibers:
3600
XVII
Number of calibers:
3304
XIX
Number of calibers:
1151, 3606
XI
Number of calibers:
1270
X
Number of calibers:
3220, 3601, 3602
XIII
Number of calibers:
1152, 1164
XII
Number of calibers:
3301, 3303, 3313
XIV
Number of calibers:
1861, 1863, 3201, 3202, 3205
XV
Number of calibers:
1866, 3604
XVI
Number of calibers:
3612
XVIII
Number of calibers:
3603
XX
B
B B
Number of calibers:
3888, 3890
XXI
Number of calibers:
3200
XV bis
Fig. X-XXI
Fig. X-XXI
Fig. X-XXI
Kuva X-XXI
Fig. X-XXI
Fig. X-XXI
Fig. X-XXI
Εικ . X-XXI
Minute counter
Minut tæller
Minutenteller
Minuuttilaskija
Minutteller
Contador de minutos
Minuträknare
Μετρητής λεπτών
Hour counter
Time tæller
Urenteller
Tuntilaskija
Timeteller
Contador de horas
Timräknare
Μετρητής ωρών
Day counter
Dag tæller
Dagenteller
Päivälaskija
Dagteller
Contador de dias
Dagräknare
Μετρητής ημερών
Fig. X-XXI |Fig. X-XXI |Fig. X-XXI |Kuva X-XXI |Fig. X-XXI |Fig. X-XXI |Fig. X-XXI |Εικ. X-XXI
Small seconds
Små sekunder
Kleine seconden
Juoksevat sekunnit
Små sekunder
Contador de segundos pequeno
Små sekunder
Μικρός δείκτης δευτερολέπτων
Chronograph seconds
Kronograf sekunder
Chronograafseconden
Ajanmittaussekunnit
Kronogragsekunder
Segundos do cronógrafo
Kronografsekunder
Δείκτης δευτερολέπτων χρονογράφου

1680
Omega
1108/
1120/1400/1424/1530
1532/1538/1680/2500/2520
Omega
JAN
2628
Omega
1128
Omega
651
/2202
Omega
2403
Omega
2300
Omega
2005
Omega
1108/
1120/1400/1424/1530
1532/1538/1680/2500/2520
Omega
2627
Omega
4000
Omega
1120
Omega
Number of calibers:
1680
V
Number of calibers:
2628
VII
Number of calibers:
2200, 2201, 2202
VIII bis
Number of calibers:
8601, 8611
I bis
Number of calibers:
1120, 1424, 1426, 1530, 1532, 1538,
2500, 2520, 2610, 8500, 8501, 8520,
8521
I
Number of calibers:
4000
Number of calibers:
1376, 1456, 2005, 2006, 2007
II
Number of calibers:
2627
III
Number of calibers:
1120
IV
Contents
➜➜
➜
Number of calibers:
1128
VI
Number of calibers:
2403
VIII
Number of calibers:
2300
IX
A A
AII bis
Caliber Number:
Kalibernummer:
Kaliber nummer:
Koneistonumero:
Kalibernummer:
Número de calibre:
Kalibernummer:
Αριθμός τύπου μηχανής:
Figure Number:
Figurnummer:
Figuur nummer:
Kuvanumero:
Figurnummer:
Número de figura:
Figurnummer:
Αριθμός εικόνας:
Page:
Side:
Pagina:
Sivu:
Side:
Página:
Sida:
Σελίδα:
Fig. I-IX
Fig. I-IX
Fig. I-IX
Kuva I-IX
Fig. I-IX
Fig. I-IX
Fig. I-IX
Εικ . I-IX
Fig. I-IX |Fig. I-IX |Fig. I-IX |Kuva I-IX |Fig. I-IX |Fig. I-IX |Fig. I-IX | Εικ. I-IX

3
English
Introduction
– Special recommendations .............................. 4
– Environmental protection .............................. 5
– Leather straps ........................................ 6
– Anti-reflective treatment ............................... 6
– Screw-down crown .................................... 6
– OMEGA International Warranty ....................... 7
Operating instructions
–Quartz watch
Calibres: 1376, 1424, 1426, 1456, 1530, 1532, 1538 ........ 11
4000 ........................................ 12
–Quartz Chronograph
Calibres : 1270 ........................................ 12
5200 ........................................ 14
–Manual & Self-winding watch
Calibres : 8500, 8501, 8601, 8611 ........................ 16
1120, 2300, 2500, 2520, 2610, 2627, 8520, 8521 . . . 17
2005, 2006, 2007, 2200, 2201, 2202, 2403 ........ 19
–Manual-winding chronograph
Calibres : 1861, 1863, 1866, 3200, 3201, 3604 ............ 20
–Self-winding chronograph
Calibres : 3202, 3205, 3220, 3601, 3602 .................. 22
–Self-winding chronograph with date
Calibres : 1151,1152,1164,3301,3303,3304,3313,3606,
3888, 3890................................... 24
–Self-winding split-seconds chronograph
Calibres : 3600, 3612 .................................. 26
–Perpetual calendar
Calibre: 1680 ........................................ 28
–Self-winding GMT & GMT Chronograph
Calibres : 1128, 2628, 3603 ............................. 31
Precision tolerances
– Mechanical watches / Quartz watches ................... 34
Specific sections/general information
– Helium escape valve ................................... 36
– Tachymetric scale...................................... 38
– Adjusting the length of the rubber strap .................. 39
– Foldover clasps ....................................... 41
– Pictograms ........................................... 43
1
Contents
2
3
4

Special recommendations
1 Introduction
4
What must I do to ensure that my OMEGA watch provides
me with excellent service for many years?
Magnetic fields: avoid placing your watch on loudspeakers or
refrigerators, since they generate powerful magnetic fields.
Swimming in the sea: always rinse your watch with fresh water
afterwards.
Shocks: whether thermal or other, avoid them.
Screw-down crown: screw down the crown carefully to prevent
water from penetrating the mechanism.
Non Screw-down crown: push it back into the neutral position
to prevent water from entering the mechanism.
Cleaning: for metal bracelets and water-resistant cases,use a tooth-
brush with soapy water to clean and a soft cloth for drying.
Chemical products: avoid direct contact with solvents, deter-
gents, perfumes, cosmetics etc.,since they may damage the bracelet,
case or gaskets.
Temperature: avoid exposure to extreme temperatures (greater
than 60°C, or 140°F, less than 0°C, or 32°F) or extreme tempera-
ture changes.
Water resistance: a watch's water resistance cannot be per-
manently guaranteed. It may be affected by the ageing of gas-
kets or by an accidental shock to the crown. As stipulated in our
service instructions, we recommend you have the water resistance
of your watch checked once a year by an approved
OMEGA
service agent.
Chronograph push-pieces: do not operate chronograph pushers
under water in order to prevent water entering the mechanism.
Exception: The Seamaster 300 m and 600 m Chronographs have
pushers which function under water.

5
English
What are the service intervals?
Like any precision instrument, a watch needs regular servicing to
ensure that it functions perfectly.We cannot indicate the frequency
of such work, since it depends entirely on the model, the climate and
the owner's individual care of the watch.As a general rule, a watch
should be serviced every 4 to 5 years, depending on the conditions
in which it is used.
Who should I contact for a maintenance service or bat-
tery replacement?
We recommend that you contact an approved OMEGA service centre
or authorised OMEGA retailer,as they are the only entities equipped
with the tools and apparatus required to carry out the work and the
necessary checks in a professional manner. Furthermore, only these
entities can guarantee that their work is carried out in accordance
with OMEGA's strict quality standards.
Special recommendations
Environmental protection
1 Introduction
Collection and treatment of end of life Quartz watches*
This symbol indicates that this product should not be
disposed of with household waste. It has to be returned
to a local authorised collection system. By following this
procedure you will contribute to the protection of the environ-
ment and human health.The recycling of the materials will help to
conserve natural resources.
*valid in EU member states and in any countries with correspon-
ding legislation.
1 Introduction

1 Introduction
6
Leather straps
OMEGA recommends that you follow the steps below in order
to preserve the condition of your leather strap for as long as
possible:
– avoid contact with water and dampness to prevent discoloura-
tion and deformation.
– avoid prolonged exposure to sunlight to prevent the colour from
fading.
– do not forget that leather is permeable! Therefore avoid contact
with greasy substances and cosmetic products.
– if you have a problem with your leather strap, please contact your
nearest
OMEGA retailer!
Anti-reflective treatment
1 Introduction
The anti-reflective treatment on both sides of the sapphire crystal
improves the visibility of your watch’s dial.Wear and tear may cause
marks to appear.These are considered normal and are therefore not
covered by the warranty.
Screw-down crown
1 Introduction
Some watches are fitted with a screw-down crown which must be
unscrewed to alter the date and time. After use, push the crown
into position 1 then press and screw the crown back down, failure
to screw the crown down will compromise water resistance.
t
d

English
OMEGA International Warranty
Introduction1
(Valid for U.S.A. only)
Your OMEGA®watch is warranted by OMEGA SA* FOR
A PERIOD OF TWENTY-FOUR (24) MONTHS, THIRTY-SIX (36)
MONTHS FOR WATCHES WITH A CO-AXIAL ESCAPEMENT, FROM
THE DATE OF PURCHASE under the terms and conditions of this
warranty. The international OMEGA warranty covers material
and manufacturing defects existing at the time of delivery of
the purchased OMEGA watch (“defects”). The warranty only
comes into force if the warranty certificate is dated, fully and
correctly completed and stamped by an official OMEGA**
dealer (“valid warranty certificate”).
During the warranty period and by presenting the valid warranty
certificate, you will have the right to have any defect repaired
free of charge. In the event that repairs are unable to restore the
normal conditions of use of your OMEGA watch, OMEGASA
guarantees its replacement by an OMEGA watch of identical or
similar characteristics. The warranty for the replacement watch
ends twenty-four (24) months, thirty-six (36) months for watches
with a co-axial escapement, after the date of purchase of the
replaced watch.
This manufacturer’s warranty does not cover:
– the life of the battery.
– normal wear and tear and ageing (for example scratched
crystal; alteration of the colour and/or material of non metallic
straps and chains, such as leather, textile, rubber).
– any damage on any part of the watch resulting from abnormal/
abusive use, lack of care, negligence, accidents (knocks, dents,
crushing, broken crystal, etc.), incorrect use of the watch and
non-observance of the operating instructions provided by
OMEGASA.
– the OMEGA watch handled by non-authorized persons (for
example for battery replacement, service or repair) or which
has been altered in its original condition beyond OMEGASA’s
control.
7
OMEGA International Warranty
1 Introduction

8
Introduction1 OMEGA International Warranty
ALL APPLICABLE IMPLIED WARRANTIES, INCLUDING THE IMPLIED
WARRANTY OF MERCHANTABILITY AND OF FITNESS FOR A
PARTICULAR PURPOSE GIVEN TO YOU BY LAW ARE HEREBY
LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY.
UNDER NO CIRCUMSTANCES WILL OMEGA SA BE LIABLE FOR
ANY INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND.
Some states do not allow limitations on how long implied war-
ranties last, or exclusions or limitations of incidental or conse-
quential damages, so exclusions or limitations mentioned may
not apply to you. This warranty gives you specific legal rights
and you may also have other rights which may vary from state
to state.
OMEGA SA’s OBLIGATION IS STRICTLY LIMITED TO REPAIR
OR REPLACEMENT AS EXPRESSLY STATED IN THIS LIMITED
WARRANTY. YOUR OFFICIAL OMEGA DEALER CARRIES SOLE
RESPONSIBILITY FOR ANY OTHER GUARANTEES.
The OMEGA customer service ensures the perfect working order
of your OMEGA watch. If your watch needs maintenance, rely
on an official OMEGA dealer or an authorized OMEGA Service
Center as set forth in the enclosed list: they can guarantee service
according to OMEGASA’s standards.
* OMEGASA
Rue Stämpfli 96, CH-2500 Bienne 4
**OMEGASA Specialist Dealer in EU Countries
OMEGA®and ®are registered trademarks

9
English
OMEGA International Warranty
Introduction1
Your OMEGA®watch is warranted by OMEGASA* for a period
of twenty-four (24) months, thirty-six (36) months for watches
with a co-axial escapement, from the date of purchase under the
terms and conditions of this warranty.The international OMEGA
warranty covers material and manufacturing defects existing at
the time of delivery of the purchased OMEGA watch (“defects”).
The warranty only comes into force if the warranty certificate is
dated, fully and correctly completed and stamped by an official
OMEGA** dealer (“valid warranty certificate”).
During the warranty period and by presenting the valid warranty
certificate, you will have the right to have any defect repaired free
of charge. In the event that repairs are unable to restore the normal
conditions of use of your OMEGA watch, OMEGASA guarantees
its replacement by an OMEGA watch of identical or similar charac-
teristics.The warranty for the replacement watch ends twenty-four
(24) months,thirty-six (36) months for watches with a co-axial esca-
pement, after the date of purchase of the replaced watch.
This manufacturer’s warranty does not cover:
– the life of the battery.
– normal wear and tear and ageing (for example scratched crystal;
alteration of the colour and/or material of non metallic straps and
chains, such as leather, textile, rubber).
– any damage on any part of the watch resulting from abnor-
mal/abusive use, lack of care, negligence, accidents (knocks,
dents, crushing, broken crystal, etc.), incorrect use of the watch
and non-observance of the operating instructions provided by
OMEGASA.
– any consequential or indirect damage resulting from the use,
failure to operate, defects or lack of precision of the OMEGA
watch.

10
Introduction1 OMEGA International Warranty
– the OMEGA watch handled by non-authorised persons (for
example for battery replacement, service or repair) or which
has been altered in its original condition beyond OMEGASA’s
control.
Any further claim against OMEGASA, for example for damages
additional to the above described warranty is expressly excluded,
except mandatory statutory rights the purchaser may have against
the manufacturer.
The above manufacturer’s warranty:
– is independent of any warranty that may be provided by the
seller, for which he carries sole responsibility;
– does not affect the purchaser’s rights against the seller nor any
other mandatory statutory rights the purchaser may have against
the seller.
The OMEGA customer service ensures the perfect maintenance
of your OMEGA watch. If your watch needs attention, rely on an
official OMEGA dealer or an authorised OMEGA Service Centre
as set forth in the enclosed list: they can guarantee service accor-
ding to OMEGASA’s standards.
* OMEGASA
Rue Stämpfli 96, CH-2500 Bienne 4
**OMEGASA Specialist Dealer in EU Countries
OMEGA®and ®are registered trademarks

11
English
The crown has 3 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
2. Correcting the date: pull the crown out to position 2, turn the
crown forwards or backwards. Push the crown back to position 1.
3. Time setting: pull the crown out to position 3.The seconds hand
will stop.Turn the crown forwards or backwards. Synchronise the
seconds by pushing the crown back to position 1 to coincide with
a given time signal.
2 Operating instructions
Quartz watch
CALIBRES 1376, 1456 (fig. II)
The crown has 2 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
2. Time setting: pull the crown out to position 2, turn the crown
forwards or backwards. Push the crown back to position 1.
CALIBRES 1426, 1530, 1532 (fig. I)
The crown has 3 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
2. Time zone: pull the crown out to position 2. Turn the crown
forwards or backwards, the hour hand moves forwards or back-
wards in one-hour jumps. Push the crown back to position 1.
CALIBRES 1424, 1538 (fig. I)

12
Quartz watch
Operating instructions2
This calibre does not have a visible crown.A corrector at 3 o’clock
on the side of the case is used to change the time by simply pres-
sing with a corrector pen that comes with the watch.
1. Time setting by pressing the corrector:
• Correcting the minutes: press briefly to advance the hand by one
minute;
• Correcting the hours: press for around 3 seconds to correct by
one hour. For corrections of more than one hour, hold until the
desired hour is displayed.
Correcting the date: the date can be moved forwards or back-
wards by moving the hour hand past midnight accordingly. Push
the crown back to position 1.
3. Time setting: pull the crown out to position 3.The seconds hand
will stop.Turn the crown forwards or backwards. Synchronise the
seconds by pushing the crown back to position 1 to coincide with
a given time signal.
For calibres 1424, 1426, 1530, 1532 and 1538, the end of battery
life is indicated by the seconds hand making 4-second jumps. The
watch will continue to function for several days, but the battery
must be removed and replaced by an authorised
OMEGA service
agent as soon as possible.
CALIBRE 4000 (fig. IIbis)
Quartz chronograph
2 Operating instructions
The time, hours, minutes and seconds functions are driven by a
primary motor using traditional quartz watch technology.
CALIBRE 1270 (fig. X)

13
English
Quartz chronograph
Operating instructions2
The chronograph functions are provided by a combination of quartz
and mechanical technology. The chronograph hand, driven by a
separate motor, makes 16 jumps per second.Its movement appears
continuous and it can be read off the scale to within 1/10th of a
second. The reset function, like the minute and hour totaliser func-
tions, is carried out mechanically. The return to zero is instanta-
neous.
In order to reduce energy consumption to a minimum, the chrono-
graph automatically stops after more than 11 hours of operation.
The crown has 3 positions:
Watch functions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
2. Correcting the date: pull the crown out to position 2, turn the
crown forwards until the required date is displayed, then push
the crown back to position 1.
NB: it is impossible to set the date between 8pm and 2am.
3. Time setting: pull the crown out to position 3.The seconds hand
will stop.Turn the crown forwards or backwards. Synchronise the
seconds by pushing the crown back to position 1 to coincide with
a given time signal.
Chronograph functions:
• Pusher A: start – stop, start – stop etc.
Timing to within 1/10th of a second up to 11 hours.
• Pusher B: reset (after stopping).
Note: if the chronograph has stopped after 11 hours in order to
conserve energy, it cannot be reset without pressing pusher A
beforehand.
Í

14
The hours, minutes, seconds and chronograph functions are powered
by 4 motors using conventional quartz technology.
The crown has 3 positions:
Watch functions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown guarantees the watch is
water-resistant.
2. Time zone correction or 30 minutes totaliser hand ini-
tialisation.
3. Time setting: pull the crown out to position 3.The seconds hand
will stop. Turn the crown forwards or backwards. Synchronise
the seconds by pushing the crown into position 1 to coincide
with a given time signal; resetting the 1/10th of a second and
60 second totalisers.
Chronograph functions:
Allows the time to be read off
to 1/10th of a second up to 30
minutes in the simple,addition or
split modes (reading split times,
intermediate times).
Simple timing function (crown in position 1):
• Pusher A: start – stop (read time)
• Pusher B: reset
Quartz chronograph
Operating instructions2
5200
Omega
CALIBRE 5200

15
English
Quartz chronograph
Operating instructions2
Addition function (crown in position 1):
• Pusher A: start
• Pusher A: stop to read time
• Pusher A: press again to restart
• Pusher A: stop
At the end of the last step, the chronograph indicates the total
time.
• Pusher B: reset
Split-time function (split seconds, crown in position 1):
• Pusher A: start
• Pusher B: stop to read the split time.
The chronograph continues to operate.
• Pusher B: restart
The chronograph hands catch up with the elapsed time.
• Pusher A: for the last stop and to display the total time
• Pusher B: reset
NB: the hands should be reset to their original position before
the chronograph is used:
– Resetting/Zeroing of the 30-minute totaliser hand: pusher B and
crown in position 2.
– Resetting/Zeroing of the 60-second totaliser hand: pusher A and
crown in position 3.
– Resetting/Zeroing of the 1/10th of a second hand: pusher B and
crown in position 3.
Í

16
The crown has 3 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
Occasional winding: if the watch has not been worn for 60
hours or more, wind it up with the crown in position 1.
2. Time zone: pull the crown out to position 2. Turn the crown
forwards or backwards; the hour hand moves forwards or back-
wards in one-hour jumps. Push the crown back to position 1.
Correcting the date: pull the crown out to position 2.The date
jumps forwards or backwards each time the hour hand passes
midnight. Push the crown back to position 1.
NB: when changing the time zone backwards, it is necessary
to move the hour hand back past 7pm to ensure the date
changes.
3. Time setting: hours – minutes – seconds. Pull the crown out to
position 3.The second hand will stop.Turn the crown forwards or
backwards. Synchronise the seconds by pushing the crown back
to position 1 to coincide with a given time signal.
Manual & Self-winding watch
Operating instructions2
Í
The crown has 3 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
Occasional winding: if the watch has not been worn for 55
hours or more, wind it up with the crown in position 1.
CALIBRES 8601, 8611 (fig. Ibis)
CALIBRES 8500, 8501 (fig. I)

17
English
Manual & Self-winding watch
Operating instruction2
2. Annual calendar: pull the crown out to position 2. Turn the
crown forwards to change the date or backwards to change
the month. Push the crown back to position 1.
Note: the day following 28 or 29 February (depending on
whether it is a leap year), the date needs to be adjusted by one
or two days (crown in position 2). Ideally, the date should be
adjusted after setting the time.
3. Time setting: hours – minutes – seconds. Pull the crown out to
position 3, the seconds hand will stop. Turn the crown backwards
only. Synchronise the seconds by pushing the crown back to
position 1 to coincide with a given time signal.
NB: when changing the date backwards in time setting mode,
it is necessary to wind the hands back to 2pm to ensure the
date changes. Make sure the month has been set prior to
setting the time.
The crown has 3 positions, but only positions 1 and 3 are func-
tional for calibre 1120 jewellery version (fig. IV).
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
Occasional winding: if the watch has not been worn for
48 hours or more (
calibres 8520, 8521: 50 hours; calibre 1120:
44 hours), wind it up with the crown in position 1.
2. Correcting the date: pull the crown out to position 2, turn the
crown backwards and push it back to position 1.
Í
CALIBRES 1120, 2500, 2520, 2610, 8520, 8521 (fig. I)
CALIBRE 2627 (fig. III)
CALIBRE 2300 (fig. IX)

For calibre 2610 only: date adjustment is made by instan-
taneous jumps.
NB: date-setting is not recommended between 8pm and 2am.
3. Time setting: hours – minutes – seconds. Pull the crown out to
position 3. The seconds hand will stop. Turn the crown forwards
or backwards. Synchronise the seconds by pushing the crown
back to position 1 to coincide with a given time signal.
Power reserve for calibre 2627:
• Counter at 9 o’clock: small seconds.
• Counter at 6 o’clock: power reserve
indicator.
When the watch is fully wound, the
power reserve indicator hand points
to 4/4. This means that the power
reserve is at least 44 hours.
Power reserve:
If the watch is not being worn, or during periods of low activity, the
power reserve indicator hand progressively moves anti-clockwise.
If the power reserve indicator hand is pointing to below 1/4, this
means that the watch’s power reserve is less than 10 hours. In this
case, the watch should be worn or wound by hand to prevent it
from stopping.
During manual winding (crown in position 1) or when worn (self-
winding), the power reserve indicator hand moves clockwise.
Manual & Self-winding watch
2 Operating instructions
18
2627
Omega
Í

19
Recommandations spéciales
1 Introduction
English
19
Manual & Self-winding watch
2 Operating instructions
CALIBRES 2005, 2006, 2007 (fig. II)
CALIBRE 2403 (fig. VIII)
The crown has 2 positions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
Occasional winding: if the watch has not been worn for 40
hours or more, wind it up with the crown in position 1.
Calibres 2006, 2007 and 2201 (manual winding)
Winding: turn the crown forwards until it stops.
2. Time setting: hours – minutes. Pull the crown out to position 2.
Turn the crown forwards or backwards. Push the crown back to
position 1.
For calibres 2200, 2202 and 2403: synchronise the seconds
by pushing the crown back to position 1 to coincide with a given
time signal.
CALIBRES 2200, 2201, 2202 (fig. VIIIbis)