Other Functions; Rotating Diving Bezel; Measurement Scales - Alpina SEASTRONG Serie Garantía E Instrucciones

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FUNCTIONS

other functions

OTHER
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3.1
ROTATING
DIVING
BEZEL
An essential feature of all Alpina diving
watches is the unidirectional, anti-clo-
ckwise, rotating bezel, used to control
immersion time. The bezel is fitted with
a graduated scale divided into minutes.
The bezel's working principle is both
simple and reliable. At the beginning of
each immersion, the zero on the bezel
must be aligned with the minute hand.
A simple glance at the position of the
minute hand with respect to the bezel
will show the diver at any moment how
much time has elapsed since the start
of the dive (in minutes).
The unidirectional anti-clockwise rotation
of the bezel is a safety feature that
ensures that any accidental movement
of the ring will always cause the remai-
ning diving time to reduce with respect
to the effective remaining diving time.
3.2
MEASURE-
MENT
SCALES
Measurement scales are scales that
establish a relation between elapsed
time and another variable. The desired
information in terms of speed (tachymeter),
distance (telemeter) or units (pulsometer,
productivity meters) is read off between
the central seconds hand of the chrono-
graph and the corresponding scale, over
a maximum duration of 60 seconds. For
the telemeter, it is possible to make use
of the minutes counter by adding 20 km
to the distance indicated by the central
seconds hand for each minute elapsed.
TACHYMETER SCALE USE
Example 1: calculating the speed of a car.
Measure the time it takes the car to
cover a distance of 1 km. Read off the
speed indicated by the central chrono-
graph seconds hand on the tachymetric
scale. In our example, the car is travelling
at 90 km/h.
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