In A while, Arnold’s chronometers would serve significant roles in famous voyages, since the devices assisted navigators calculate their longitude. Declaring the winner of the race to make the primary computerized chronograph in 1969 is contentious company, so Zenith’s “El Primero” moniker is arguable. That’s the title of the motion https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/