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Patek Philippe

In fact it is more a measure instrument than a chronograph

 

You have 3 scales :
- Pulsometre (to count your heartbeats over 15 pulsations),
- Tachymetre (to measure the speed of an object over 1000km)
-  and Telemetre (to measure the distance of an object from us by counting the gap between when we see the event starting and the moment we hear its noise).

It is not a chronograph that measures elapsed time over a long period.

Cheers, Mark

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