TiC Is usually a type of really difficult ceramic, and it may even be far more scratch-resistant than sapphire with a Mohs hardness rating up to 9.five. The bezel is usually topped with sapphire, giving as much safety as feasible towards the micro gasoline tubes that kind the markers. 1844: https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Rolex Watches for Dummies
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