Early Races were mostly timed by stopwatches mounted to car dashboards, but since the complication was shrunk, they have been much more generally viewed on wrists, particularly in the F1 and endurance racing heyday involving the ’50s and ’70s. This was the results of intense R&D by the Manufacture, which https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/