Early Races have been typically timed by stopwatches mounted to automobile dashboards, but as the complication was shrunk, they were being a lot more often observed on wrists, especially in the F1 and endurance racing heyday between the ’50s and ’70s. Chronographs — with their bezels, scales and sub-dials — https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/