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Operating instructions
2
GMT, Worldtimer, GMT Chronograph
People travelling
East
, for example from London to Hong Kong, should pull
the crown out to position 2 and move the hour hand forwards (in this case
by 8 hours). The table above can be used to calculate any time difference.
People travelling
West
, for example from London to New York, should
pull the crown out to position 2 and move the hour hand backwards
(in this case by 5 hours). The table above can be used to calculate any
time difference.
In both cases, the ’24-hour’ hand or disc allows travellers to read the
time back home – London, in our example – at a glance, using the
24-hour scale on the dial. The second time zone – in this case Hong
Kong or New York – is read off the dial in the usual way. Each time the
hour hand crosses midnight, the date jumps forwards or backwards,
depending on whether the hour hand is moved forwards or backwards.
Watch functions:
The crown has 3 positions:
1.
Normal position (wearing position):
the crown pushed in against
the case guarantees water resistance.
CALIBRE 3603
(fig. XXIV)
CALIBRES 8605, 8615, 8906
(fig. VII)
CALIBRES 8938, 8939
(fig. XIII)
CALIBRES 9605, 9615
(fig. XXVIII)
GMT, Worldtimer, GMT Chronograph
Operating instructions
2
Occasional winding:
if the watch has not been worn for 60 hours
(52h: calibre 3603) or more, wind the watch by turning the crown
whilst in position 1.
2.
Setting the time zone and correcting the date:
pull the crown
out to position 2. Turn the crown forwards or backwards, and only
the hour hand will move forwards or backwards by 1-hour intervals.
By passing the hour hand over midnight, the date can be changed
forwards or backwards. Push the crown back to position 1.
3.
Time setting:
24 hours – hours – minutes – seconds. Pull the
crown 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.
Calibres 8605, 8615, 8906, 3603, 9605 and 9615 -
second time zone "GMT"
Thanks to the ‘24-hour’ hand with its triangular point, travellers can
read the time back home at a glance on the 24-hour scale on the dial.
Synchronisation of the hour hand with the ‘24-hour’ hand:
Pull the crown out to position 2 and turn it to synchronise the hour
hand with the time indicated by the ‘24-hour’ hand on the 24-hour
scale. Make sure you set the hour hand in the correct half of the day!
After synchronising the hour hand with the ‘24-hour’ hand, you must
set the time on your watch.
Calibres 8938 and 8939 - 24H "Worldtimer" disc:
Thanks to the ‘24-hour’ disc, travellers can read the time in different
time zones symbolised by cities or geographic areas on the dial.
