WatchesAtlas / Watch knowledgeThe Watch EncyclopediaUnderstand the details that make a watch.Explore watches ↗Find a term or abbreviationCategoryAll categoriesMovements & mechanismsComplications & displaysCases, dials & braceletsFinishing & craftsmanshipPerformance & measurementModern watch technologyCollecting, condition & careSearchAllABCDEFGHIJKLMNOPQRSTUVWXYZ2 termsClear filtersPerformance & measurementRateThe amount a watch gains or loses relative to a reference over a stated time interval.↗Performance & measurementRegulationAdjustment of a movement's running rate, distinct from a complete service or overhaul.↗