ZENITH Solidifies its Worldwide reputation as being the major manufacturer of precision chronometers and instruments across many domains. The 3rd large phase transpired within the early 1900’s. The form with the timekeeping equipment changed in favor of your wristwatch. The primary chronometer wristwatch movement arrived in about 1910, and it https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/