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Customer Service / Glossary and Metric Conventions / C / C.O.S.C.

C.O.S.C.

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Glossary and Metric Conventions
- A
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- C
- - C.O.S.C.
  - Cabochon
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  - Carat
  - Chronograph
  - Chronometer
  - Coaxial
  - Colour
  - Complication
  - Coral
  - Cut
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- I
- J
- L
- M
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- Q
- R
- S
- T
- U
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Abbreviation for the Contrôle Officiel Suisse des Chronomètres (Swiss Official Chronometer-Testing Institute), an official body that delivers chronometry certificates.