| 摘要 |
PURPOSE:To obtain a moving float combined with depth measurement, by cutting between an oblique hole for measuring a depth and a horizontal hole for moving which are formed in a connecting rod. CONSTITUTION:A cutting 3 is conducted between an oblique hole 1 for measuring a depth and a horizontal hole 2 for moving which are formed in a connecting rod 6 of a float 5. A thread 8, inserted through the oblique hole 1, is used with depth measurement to measure a depth under the float. The thread 8 is moved to the horizontal hole 2 for moving through the cut spot 3, if necessary, and this causes the float to work as a moving float combined with depth measurement. |
