ultrasonic inspectoscope

ultrasonic inspectoscope

[¦əl·trə¦sän·ik in′spek·tə‚skōp]
(engineering acoustics)
An instrument that transmits sound waves, at frequencies between 500 kilohertz and 15 megahertz, into a metal casting or other solid piece and determines the presence of flaws by reflections or by an interruption of the sound-wave transmission through the piece.