TiC Is often a method of really hard ceramic, and it may even be extra scratch-resistant than sapphire that has a Mohs hardness rating around 9.five. The bezel is also topped with sapphire, providing just as much protection as possible for the micro fuel tubes that form the markers. Thanks https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
A Secret Weapon For Chronometer watches
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