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Calculating speed
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When you complete a calibrated distance of one kilometre, you can read
off your average speed directly on the tachymeter scale. Activate the
chronograph as you pass your starting point and stop it at the end of the
measured distance. The elapsed time is shown on the tachymeter scale as
speed in kilometres per hour. Please note that any period over one minute
in length is invalid.
Example: It takes 40 seconds to drive one kilometre, so your average
speed is exactly 90 kilometres per hour.
Reading the chronograph
Seconds counter: The scale for the central chronograph seconds hand
runs around the edge of the dial.
Minute and hour counters: The subdial at 12 o'clock has two hands, which
run continuously and show the elapsed time on a 12-hour and a 60-minute
scale. The hour and minute counters can be read like a standard analogue
time display. In other words, one revolution of the minute counter is
equal to 60 minutes, and one revolution of the hour counter is equal to
12 hours.
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