Double rattrapante

A double rattrapante is a chronograph with an extension of the usual rattrapante function.

With rattrapante chronographs split time measurements, time comparisons, as well as minimum and maximum time value measurements can be performed, in addition to the usual functions of chronographs.

But in conventional rattrapante chronographs these functions are limited to the seconds scale, ie exactly 60 seconds. The double rattrapante mechanism, developed by A. Lange & Söhne and presented with the model Double Split, is also equipped with a counter of flyback minutes. With this, it is now possible to use to the flyback functions up to a period of 30 minutes - and thus really useful.