Clock

A clock was an instrument for measuring time, sometimes utilising a clockwork mechanism.

Clocks

 * The First Doctor kept an ormolu clock in the TARDIS control room. (TV: An Unearthly Child)
 * The Clockwork Droids used to break clocks to hide their own ticking. (TV: The Girl in the Fireplace)
 * A spaceship crashed into "Big Ben", the clock tower of the Palace of Westminster. (TV: Aliens of London)
 * Jack Harkness parked his space craft by the clock tower of the Palace of Westminster. (TV: The Empty Child)
 * Bilis Manger ran a store called A Stitch in Time where he sold clocks. (TV: End of Days)
 * The Institute for Technological Advancement and Research had a beryllium atomic clock for the countdown to the new millennium. (TV: Doctor Who)
 * The appearance of a grandfather clock was assumed on at least three occasions by the Master's TARDIS (TV: The Deadly Assassin, The Keeper of Traken, PROSE: The Eight Doctors), although it is unclear as to whether it functioned like a real one when in this form.

Watches

 * Sarah Jane Smith received a scanner watch by the Tenth Doctor. (TV: The Sarah Jane Adventures)
 * Steven Taylor found the Monk's watch in 1066. (TV: The Time Meddler)

Sundials

 * The Doctor's second incarnation had a sundial in his TARDIS. (TV: The Tomb of the Cybermen, The Mind Robber, The War Games)