An Electronic tuner is a device used by musicians to tune instruments. A musician plays a note, and a display (a needle, an LCD simulated needle, or LED lights) tells the musician whether the pitch of that note is lower, higher, or approximately equal to the desired pitch. Some models try to automatically detect which pitch is intended, others require the musician to specify the target pitch, and others allow the user to choose between these two modes. Some models allow the user to select reference pitches other than A440. Most electronic tuners only allow tuning to an equal temperament scale. Image File history File linksMetadata Download high resolution version (1260x800, 139 KB) Chromatic tuner Self-made photograph Feb 08 2005 File links The following pages link to this file: Electronic tuner Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize... Image File history File linksMetadata Download high resolution version (1260x800, 139 KB) Chromatic tuner Self-made photograph Feb 08 2005 File links The following pages link to this file: Electronic tuner Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize... A musician is a person who plays or composes music. ... A musical instrument is a device constructed or modified with the purpose of making music. ... In music, pitch is the perception of the frequency of a note. ... A440 is the 440 Hz tone that serves as the internationally recognized standard for musical pitch. ... Equal temperament is a scheme of musical tuning in which the octave is divided into a series of equal steps (equal frequency ratios). ...