Early Races ended up generally timed by stopwatches mounted to motor vehicle dashboards, but since the complication was shrunk, they were a lot more usually witnessed on wrists, particularly in the F1 and endurance racing heyday involving the ’50s and ’70s. Motivated by British pilot’s watches through the 1970s, Hamilton’s https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/