Echo sounder and Measuring device

Echo sounder noun - A measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return.

Measuring device and echo sounder are semantically related. In some cases you can use "Measuring device" instead a noun phrase "Echo sounder".

Measuring device noun - Instrument that shows the extent or amount or quantity or degree of something.

Echo sounder and measuring device are semantically related. Sometimes you can replace phrase "Echo sounder" with "Measuring device", this phrases are similar.