Operating The Chronograph - Jaeger-leCoultre MASTER CONTROL CHRONOGRAPH CALENDAR Manual De Instrucciones

matic date-change mechanism is already
in action between these times.

OPERATING THE CHRONOGRAPH

The central seconds hand on the Master
Control Chronograph Calendar displays
the chronograph seconds to the nearest
quarter of a second.
The counter located at 3 o'clock tallies the
minutes up to 30 minutes (after 1 revolution
it will start counting another 30 minutes).
- Push-piece at 2 o'clock: this push-piece
starts and stops the chronograph function.
- Push-piece at 4 o'clock: This push-piece
resets the 30 minute counter and the
central seconds hand.
Note: When timing is in progress, reset-
ting is not possible. This push-piece is
locked and forcing it may harm the mech-
anism's functioning.
To safely reset the chronograph, timing
must be stopped first using the push-
piece at 2 o'clock.
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