One Of several chronograph’s earliest uses was timing horse races, so The natural way, the complication advanced when horses made way for horsepower. Declaring the winner from the race to make the primary automated chronograph in 1969 is contentious enterprise, so Zenith’s “El Primero” moniker is arguable. That’s the name https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/