| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve opening measuring tool easy to carry and capable of easily measuring a valve opening without calculation. SOLUTION: The valve opening measuring tool includes a rod like member 2 capable of being carried and capable of being approached to a driving shaft 105, and a valve opening diagram 3 displayed on a surface of the rod like member 2. The valve opening diagram 3 has a first ordinate axis and a second ordinate axis arranged with a prescribed interval, and a plurality of valve opening display lines constituted by connecting opening scales showing the same opening in a large scale part and a small scale part by straight lines are formed between the first ordinate axis and the second ordinate axis. COPYRIGHT: (C)2011,JPO&INPIT
|
