EntityQ1000863· pop 7· linked from 37 articlesmaster clockSign in to saveprecision clock that provides timing signals to synchronise slave clocks as part of a clock networkConnectionspendulum clockEntityUnited States Naval ObservatoryEntityradio clockEntityWashington, D.C.EntityclockEntityUTCEntityatomic clockEntityRoyal ObservatoryEntityescapementEntity19-inch rackEntityelectrical contactEntityelectric clockEntityGeneral Post OfficeEntitytimesheet softwareEntityseconds pendulumEntityShortt-Synchronome clockEntityclock networkEntityslave clockEntityCategoriesClocksTelecommunications equipment