Among The chronograph’s earliest works by using was timing horse races, so By natural means, the complication progressed when horses produced way for horsepower. Declaring the winner on the race to make the main computerized chronograph in 1969 is contentious business, so Zenith’s “El Primero” moniker is arguable. That’s the https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/