🌐EnglishEnglishDeutschEspañolFrançaisSvenskaفارسی中文日本語EntityQ1000863· pop 7· linked from 37 articlesmaster clockprecision clock that provides timing signals to synchronise slave clocks as part of a clock networkWikidata factsImageUsno-mc.jpgSources (2)wikidata.orgdocs.openalex.orgvia Wikidata · CC0Available in 6 languagesEspañolFrançaisDeutschSvenskaفارسیvia Wikidata sitelinks · CC0Connectionspendulum clockEntityUnited States Naval ObservatoryEntityCategoriesClocksTelecommunications equipment