Cov lus qhia

19
II.
MEASURING AN INTERRUPTED SHORT TIME
1. Press pushpiece A to start the chronograph. Hand3 shows the
measurement in seconds.
2. To interrupt the measurement, press pushpieceA once more.
To restart the time measurement, press pushpieceA. This
procedure makes it possible to add up several short times.
3. The chronograph is reset to zero by pressing pushpieceB,
once the fi nal measurement has been stopped.
18
SPECIAL CHARACTERISTICS
USING THE TACHOMETER
The tachometer is the graduation on the dial or flange of your Breitling chronograph
enabling you to determine average speeds or hourly productivity rate, based on an
observation period of less than 60 seconds.
1. Average speed
Using the chronograph to measure the time required to cover akilometer or a mile. The final
position of the second hand indicates the average speed. If it takes 20 seconds to cover
1 km or 1 mile, the scale respectively indicates an average speed of 180 km/h or 180 miles/h.
2. Hourly productivity rate
Measuring the time required to produce 1 unit. If the chronograph is stopped at 40 seconds,
the tachometric scale indicates 90, corresponding to an hourly productivity rate of 90 units.