One Of many chronograph’s earliest utilizes was timing horse races, so naturally, the complication evolved when horses manufactured way for horsepower. Declaring the winner with the race to construct the first automatic chronograph in 1969 is contentious small business, so Zenith’s “El Primero” moniker is arguable. That’s the title in https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/