Early Races were being mostly timed by stopwatches mounted to motor vehicle dashboards, but since the complication was shrunk, they had been far more frequently observed on wrists, especially in the F1 and endurance racing heyday amongst the ’50s and ’70s. Impressed by British pilot’s watches in the 1970s, Hamilton’s https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/