TiC Can be a form of very difficult ceramic, and it may even be additional scratch-resistant than sapphire by using a Mohs hardness score around nine.five. The bezel can be topped with sapphire, supplying just as much defense as feasible for the micro gasoline tubes that type the markers. ZENITH https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
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