Sonic depth finder definitions

sonic depth finder

[n] - depth finder for determining depth of water or a submerged object by means of ultrasound waves
Found on http://www.webdictionary.co.uk/definition.php?query=sonic%20depth%20finder

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sonic depth finder

fathometer noun depth finder for determining depth of water or a submerged object by means of ultrasound waves
Found on https://www.encyclo.co.uk/local/20974

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