TiC Is actually a sort of exceptionally difficult ceramic, and it can even be more scratch-resistant than sapphire by using a Mohs hardness rating approximately 9.5. The bezel is also topped with sapphire, giving just as much defense as is possible on the micro gas tubes that type the markers. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
The 2-Minute Rule For chronometer watches
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