Dictionary of Ichthyology
Kelvin sounding machine = a machine used to calculate water depth in fathoms. A lead weight was lowered on a wire and the depth recorded by the apparatus. See also lead line.
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Dictionary of Ichthyology |
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| Kelvin sounding machine = a machine used to calculate water depth in fathoms. A lead weight was lowered on a wire and the depth recorded by the apparatus. See also lead line. |
| Photograph by Brian W. Coad |