Column / Pillar wheel, the piece that governs the start, stop and return to zero functions of the chronograph mechanism. Often associated to high quality or vintage chronographs. Below interpreted by 8 different watch houses.
Breguet Classique 5287
Audemars Piguet CODE 11.59
Breitling Navitimer (Manufacture Caliber 01)
Bulgari Octo Finissimo GMT
Dubois Dépraz Integrated Reference DD540
Seiko -5- Sports “Speed-Timer” 1972
Tag Heuer Autavia
Vacheron Constantin Traditionnelle Tourbillon
Deconstruction Zenith Cronometro Tipo CP2