2004 - Double Split Chronograph


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2004 - Double Split Chronograph

A. Lange & Söhne introduces mechanical chronograph with a double-rattrapante function with two seconds counters and two minute counters. This extend the range for lap-time measurements from 60 seconds to 30 minutes.
The DOUBLE SPLIT features two chronograph hands and two rattrapante hands (blue hands). Both pairs of hands can be stopped separately. Additionally, the stopped rattrapante hands can rejoin the still running chronograph hands. This allows purely mechanical comparative and intermediate time measurements of events lasting up to 30 minutes.

 



The upper button, in the right side of case (crown side), starts and stops the chronograph hands, the lower one resets them to zero. The flyback function is activated when the lower button is pressed while the chronograph hands are running. This allows the hands to be stopped, reset to zero and restarted for a new measurement in one single step. When the button in the left-hand case flank is actuated, the rattrapante hands (blue hands) will stop to display a first intermediate time. This action reveals the rattrapante hands because previously, they were hidden beneath the running chronograph hands. When the button is pressed again, the rattrapante hands catch up with the chronograph hands and run synchronously with them.



Source: lange-soehne.com
 

Notifier: Władysław Meller
Other records: Timeline of Watchmaking Innovations

ETERNA - KALENDARIUM

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