Comprehensive
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instrument landing a landing accomplished only by means of the instruments of an aircraft and signals from the ground, rather than by visual observation.
instrument panel a panel of meters, gauges, and controls, as in an automobile, aircraft, or spacecraft.
percussion instrument a musical instrument that is sounded when some part of it is struck. Pianos, drums, cymbals, and xylophones are percussion instruments.
reed instrument any musical instrument, such as the clarinet, oboe, or bassoon, in which the sound is produced by a vibrating reed or reeds.
stringed instrument any musical instrument that is sounded by bowing, plucking, or strumming the strings. Violins, guitars, and zithers are some stringed instruments.
transit instrument a telescope mounted so that it can be rotated only along a longitudinal meridian, used to observe and measure the transit time of celestial bodies across that meridian.
wind instrument a musical instrument that is sounded by the force of air blown into it. Flutes, trumpets, and clarinets are some wind instruments.