Chanel J12 - Advanced J12 Complications; J12 Superleggera Chronograph and Tachymeter; Using the Superleggera Tachymetric Function

J12 COLLECTION
FUNCTIONS
4
1:1
26.02.2013
Rqs
N° de dessin :
11407.479 mm³ Vol.:
Ech.:
26/02/2013 Ph.Martin Dessiné :
Rév :
A4
Format :
Date d'édition :
Controlé :
Tol. générale : ±50µm / ±0.1°Tol. en µm
Cotes en mm
Modications:
Désignation :
G & F CHATELAIN SA
LA CHAUX-DE-FONDS
TDM-00122 Aig-10H10
A
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CONFIDENTIEL
A B
D
J
K
F
H
G
E
C
I
A - Hour hand
B - Minute hand
C - 60 second counter
D - Date
E - Crown
F - Start push button
G - Reset to zero push button
H - Chronograph second hand
I - 30 minute counter
J - Tachymetric Scale
K - 1,000 m base
J12 Superleggera Chronograph
Chronograph Function
a) To start the Chronograph, unscrew then press button F: this first press starts the measurement
of time. Pressing again stops it and pressing a third time, restarts the measurement. This allows several
measurements to be accumulated at different intervals.
b) To reset the Chronograph to zero, unscrew then press button G. The central second hand H
will return to its starting position (numeral 12), as will do the hand on counter I.
Tachymetric Function
The Tachymetric function enables to measure the speed of an object moving over a known
distance. The base length is indicated on the scale J. The speed per hour readings, indicated by
the scale, are based on an observational distance of 1,000 metres.
The user starts the chronograph (button F) when the vehicle crosses the starting marker and stops
it when it passes the end marker (buttton F). The position of the chronograph second hand on the
tachymetric scale corresponds to the average speed in km/h.
E.g. If it takes 40 seconds to cover 1,000 m, the average speed is 90 km/h.