ZENITH Solidifies its Global track record because the main manufacturer of precision chronometers and devices across numerous domains. The 3rd big move transpired within the early 1900’s. The form in the timekeeping equipment altered in favor on the wristwatch. The first chronometer wristwatch movement came in about 1910, and it https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/