A board used to ascertain the depth of water.
| 单词 | θ117526 |
| 释义 | the world > relative properties > measurement > measuring instrument > [noun] > for measuring depth > of any water (2) sounding-board1776 A board used to ascertain the depth of water. hook gauge1875 an instrument for accurately determining the surface level of water and consisting of a hook and pointer attached to a fixed vernier, the hook… |
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