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3. Stop the Chronograph hand when hearing the thunder.
4. The Chronograph hand will point to a numeral on the telemeter scale, in-
dicating the approximate distance (in km) between the observer and the
position of the lightning (current location of thunderstorm).
RECALIBRATING THE TIMER HANDS
The timer hands are preset to begin at zero. It is possible that over time the
hands will not begin at zero. If this happens you will need to recalibrate the
hands. You may also set them to begin at a different point (see below).
For Pilot Series
1. Pull out the crown to Position 3.
2. Hold both pushers down simultaneously for 2 seconds; the chronograph
seconds hand will rotate to indicate that the corrective mode is activated.
Release the pushers.
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