n.1.(Mus) A graduated scale for measuring the duration of sounds, and determining their different, and the relation of their intervals.
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Tenders are invited for Supply of Bearing Echometer With Vibration Transducer Model No M-900 Make: Maynard Or Mcm.
Artie went on to patent an early version of the sonar system of measuring ocean depths, inventing a very early form of sonar called the Echometer, and worked at the Marconi company until his death in 1949 at the age of 62.
Fluid levels are continually monitored in each wellbore with an Echometer.