background image

17

16

YOUR BREITLING CHRONOMETER

A chronometer is a high-precision instrument that has successfully passed the
entire  battery  of  tests  imposed  by  the  COSC  (Swiss  Official  Chronometer
Testing Institute), a neutral and independent body which individually tests
each movement according to the prescriptions in force. 

The  certification  test  for  wristwatches  with  sprung  balance  oscillators,
according to the ISO 3159 norm, consists of observing each movement for
15 days and 15 nights, in 5 positions and at 3 different temperatures (8°, 23°C,
38°C).  In  order  to  earn  the  prestigious  chronometer  label,  a  movement’s
performances must meet 7 very strict criteria, including a daily variation in
rate ranging between only –4/+6 seconds.

The term “chronometer” should not be confused with that of “chronograph”,
which is a complicated watch fitted with an additional mechanism enabling

the measurement of the duration of an event. A chronograph is not neces-
sarily chronometer-certified, but all B

REITLING

chronographs carry the much-

coveted title of “chronometers”.

PREPARING THE WATCH FOR USE

WINDING – DATE ADJUSTMENT – TIME-SETTING

Nota  bene: 

mechanical  watches  endowed  with  a  date,  day,

month  or  moon-phase  indicator  are  equipped  with  a  complex

mechanism that is set into motion between 8 pm and 3 am. It is

therefore  vital  to  avoid  adjusting  the  calendar  or  moving  the

time backwards during this period.

1. Wind the watch by 40 clockwise turns of the crown.

2. Pull the crown to position 3 to adjust the hour and the

minute, while referring to the 24-hour display to avoid

any confusion such as between 10 am and 10 pm.

3. Place the crown in position 2. Turn it anticlockwise to

show the right month (the month indication changes

with  each  full  rotation  of  the  hand).  Then  position

the hand on the exact date.

Содержание Montbrillant Datora

Страница 1: ...MONTBRILLANT DATORA...

Страница 2: ...dei minuti Aguja de minutos Ponteiro dos minutos c Aiguille des secondes Seconds hand Sekundenzeiger Lancetta dei secondi Aguja de segundos Ponteiro dos segundos c Aiguille des heures Hour hand Stunde...

Страница 3: ...h which is a complicated watch fitted with an additional mechanism enabling the measurement of the duration of an event A chronograph is not neces sarily chronometer certified but all BREITLING chrono...

Страница 4: ...by pressing pushpiece A once more The measurement is done in hours totalizer 1 minutes totalizer 2 seconds and 1 5 ths of a second hand 3 3 Return the chronograph to zero by pressing push piece B B A...

Страница 5: ...HE TACHOMETER The tachometer is the graduation on the dial or flange of your BREITLING chronograph enabling you to determine average speeds or hourly produc tivity rate based on an observation period...

Страница 6: ...clock indicates the South the North being exactly opposite In the Southern hemisphere Point the hour marker located at 12 o clock on the dial precisely towards the sun In relation to the watch dial t...

Страница 7: ...y two years while the complete overhaul should be scheduled about every five years Your authorized BREITLING dealer will be pleased to handle this for you WATER RESISTANCE The movement of your chronom...

Страница 8: ...ion expressed in bars must be considered a safety factor protecting your chronometer from dust and splashing Only watches that are water resis tant to 5 or more bars should be subjected to repeated im...

Отзывы: