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Longines L440 Manual

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79
CHRONOGRAPHS – GENERAL POINTS
THE CHRONOGRAPH
The chronograph is an instrument for measuring short periods of
time. It is used mainly in sport but also in aviation or for scienti c
experiments, for example.
Chronographs standard functions
Standard Start-Stop function
Add Rally function (partial times)
Standard Start-Stop function
Used for timing a single event:
• Press push-piece A: to start the chronograph.
• Press push-piece A: to stop the chronograph.
• Press push-piece B to return to zero.
Add Rally function (partial times)
Used for measuring successive events but not the inter-vals between
them. Each result is automatically added to the preceding one. To
time the different stages of a car rally, for example:
• At the start of the rst stage, press push-pieceA to start
the chronograph.
• At the end of the  rst stage, press push-piece A again and
the chronograph will stop.
• Repeat this procedure for each stage of the rally.
• At the end of the  nal stage the chronograph will show the total
time of the rally, in other words, the accumu-lated time for all
the stages.
• Press push-piece B to return to zero.
The Column-Wheel
The column-wheel movement is reputed for the feeling
of crisp ef ciency its handling provides. In particular, the
instant responsiveness of its pushpieces adds to the pleasure of
using the chronograph.
Tachometric scale
Chronograph tted with a scale allowing speed to be read
in kph.
Measure the time needed to cover 1 kilometre (or 1 mile). The position
of the seconds hand when it stops indicates the mean speed. If it
takes 30 seconds to cover 1 km (or 1 mile), the scale will indicate
a mean speed of 120 kph (or 120 mph).
Pulsometer scale
A chronograph whose dial features a scale enabling the
wearer to directly read their hear trate, by starting the
chronograph and counting 30 beats.
IMPORTANT! The time should not be adjusted
while the chronograph function is being used.
Chronograph tted with a scale allowing speed to be read
in kph.
The column-wheel movement is reputed for the feeling
of crisp ef ciency its handling provides. In particular, the
instant responsiveness of its pushpieces adds to the pleasure of
A chronograph whose dial features a scale enabling the
wearer to directly read their hear trate, by starting the
chronograph and counting 30 beats.
Book_I.indb 79Book_I.indb 79 27.01.20 09:4727.01.20 09:47
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