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Glashütte Original

Marcus offered a concise explanation . . .

 

. . . in 2005 when the cal 100 was introduced:

"Instead of a simple hack second, the cal. 100 has a very sophisticated mechanism, allowing an instant reset of the sweep second to zero, as soon as the pusher is pressed. Upon release, the second hand will restart immediately. This mechanism, which in fact is an elaborate vertical clutch system, decouples the seconds pinion from the train and thus the balance keeps running during this process. This avoids the inevitable loss of amplitude and therefore accuracy, which happens when the balance wheel has to be stopped and restart again."



Many G Os equipped with the cal 100 make use of this feature . . . cordially, Art

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