iwc IW3921 Operating Instructions Manual page 12

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READING THE
CHRONOGRAPH
Chronograph seconds hand: The
scale for the central chronograph sec­
onds hand runs around the edge of
the dial.
Minute and hour counters: The sub­
dial at 12 o'clock has two hands, which
run continuously and show the elapsed
time on a 12­hour and a 60­minute
scale. The hour and minute counters
can be read like a standard analogue
time display. In other words, one revo­
lu tion of the minute counter is equal to
60 minutes, and one revolution of the
hour counter is equal to 12 hours.
D A V I N C I P E R P E T U A L C A L E N D A R C H R O N O G R A P H