A graduated surface or face on which a measurement, such as speed, is indicated by a moving needle or pointer, the circular graduated indicator on various measuring instruments, A panel on a radio etc showing wavelengths or channels; a knob that is turned to change the wavelength etc, intransitive verb_ To measure with or as if with a dial, To call (a party) on a telephone, To signal (a number) in making a telephone call, transitive verb_ To measure with a dial, (Mining) To survey with a dial