WATCH TALK FORUMS - Outer Components

  • Outer Components

    Horology 101 - crystals 

    by
    ulackfocus
    Published on 09-21-2008 08:00 AM  Number of Views: 687 
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    There are 3 types of materials commonly used for watch crystals: plexiglas, mineral glass, and synthetic sapphire. The harder ...
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