Watch Glossary
1676 horological terms explained
All categoriesAccessoryAdjustmentAdministrationAestheticsAuction House TermsAuthenticationBezelBraceletBrandingBusinessCaseCase DesignCase FeatureCertificationClaspCleaningCollectingCollecting and MarketComplicationComplicationsConditionCondition GradingCrownCrystalDecorationDesignDetailDialDisplayDivingEnvironmentalEventsExtensionFeaturesFinishingHandsHeat TreatmentHistoryIconsIndustryInspectionLifestyleLink TypeMaintenanceManufactureMaterialsModelModernMovementOrganizationsPartsPlatingPrecisionRefinishingServiceStandardsStrapSurface CoatingSurface FinishingSurface TreatmentTechnicalTestingTimekeepingToolsTreatmentsVariantWatch JournalismWatch TypesWater Sports
Testing ProtocolCertification
Standardized procedures by COSC for evaluating chronometer precision and reliability
Timekeeping ToleranceCertification
Maximum allowed variation in seconds per day certified by COSC standards