TiC Is a type of incredibly hard ceramic, and it may even be much more scratch-resistant than sapphire which has a Mohs hardness rating around nine.five. The bezel is also topped with sapphire, giving as much safety as possible into the micro gasoline tubes that variety the markers. Chronographs — https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Brands That manufacture chronometer watches for Dummies
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