Patek Philippe CH 29-535 PS Bedienungsanleitung Seite 8

TACHYMETER
Your watch has a tachymeter scale calibrated to
1000 meters . On a highway, a car passenger
would typically start the chronograph when passing
a kilometer sign and stop it when passing the next
one. The chronograph hand shows the elapsed time
between the signs and, on the tachymeter scale, the
average speed of the car during the measurement. It
therefore measures the time needed to travel a given
distance rather than the distance travelled within a
given time.
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PULSIMETER
Medical heart rate measurements are expressed as
the number of pulses per minute. To accelerate such
measurements without having to wait for an entire
minute while counting, your watch has a pulsime-
ter scale calibrated to 30 heartbeats (GRADUÉ
POUR 30 PULSATIONS). If your watch is started
when the first pulse is felt and stopped on the thir-
teenth, the pulsimeter scale display the number of
pulses per minute. During their daily rounds in the
wards, physicians once typically had to take the
pulse of over a hundred patients. A pulsimeter watch
saved them more than an hour a day.
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