| 摘要 |
PURPOSE:To eliminate the defects such as attachment of bubbles, by constituting the level by a pair of liquid containers, which are separately provided, pipes, which communicate the liquid in the two liquid containers, and the like. CONSTITUTION:A long casing 5 has a symmetrical configuration on the right and left sides. The inside of a central part 51 is hollow. Set parts 52 and 53 of the liquid containers 61 and 62 are provided at both end parts of the casing. Both containers 61 and 62 are communicated by a communicating path 8 comprising the pipe and the like, so that the liquid 7 in the inside can be freely communicated. A communicating path 10, which is provided at the upper part, keeps the pressure balance between the internal spaces of the containers 61 and 62. In the level having said constitution, the liquid positions in the right and left liquid containers 61 and 62 are measured by scales 11. Thus a slant angle can be found. |
