Early Races have been typically timed by stopwatches mounted to car or truck dashboards, but because the complication was shrunk, they have been much more generally found on wrists, especially in the F1 and endurance racing heyday among the ’50s and ’70s. Chronographs — with their bezels, scales and sub-dials https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/