Historically inspired: jumping seconds from A. Lange & SöhneSIHH 2018: The 1815 Homage to Walter Lange
In general, mechanical timepieces can be recognised by their "creeping seconds" hand. Depending on the balance frequency, the hand advances from second to second in five to ten steps. In short-time measurements, however, where seconds count in the literal sense, constant progression sometimes makes it difficult to pinpoint the beginning and the end of an event.