Early Races were mostly timed by stopwatches mounted to automobile dashboards, but as the complication was shrunk, they were being much more usually witnessed on wrists, especially in the F1 and endurance racing heyday in between the ’50s and ’70s. Chopard's Mille Miglia collection celebrates the world's most gorgeous race. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/