COSC
Sign in to savethumb|right|Contrôle officiel suisse des Chronomètres The Contrôle officiel suisse des Chronomètres (COSC), the Official Swiss Chronometer Testing Institute, is the institute responsible for certifying the accuracy and precision of Swiss watches.
~15 min read
Article
16 sectionsContents
- Background
- Standards and methods
- Observatory trials and standards before 1973
- The value of COSC certification
- Only fractions of Swiss Watch production are COSC certified
- Meaningful test or marketing gimmick?
- Exemplar brands submitting to COSC
- Certification in perspective
- Additional METAS Master Chronometer certification
- METAS N001 "Master Chronometer" certification
- Part A - Technical requirements
- Part B - Organizational requirements
- METAS infrastructure
- See also
- References
- External links
thumb|right|Contrôle officiel suisse des Chronomètres The Contrôle officiel suisse des Chronomètres (COSC), the Official Swiss Chronometer Testing Institute, is the institute responsible for certifying the accuracy and precision of Swiss watches.
==Background== Founded in its current form in 1973, the COSC is a Swiss non-profit organization that tests chronometers that are Swiss Made. COSC is an acronym for the organization's French language name, Contrôle Officiel Suisse des Chronomètres.