The word has two watch-related meanings. One is the transparent, protective cover over a watch dial. These covers can be made of plastic, mineral glass or synthetic sapphire. The other meaning of “crystal” is the tiny piece of quartz that regulates the timekeeping of a quartz watch.
All items in C:
- CENTER, OR SWEEP SECONDS HAND
- CHAPTER RING
- COLUMN WHEEL
- COSC (OR C.O.S.C.)