| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an oil gauge allowing a window body and a reflecting surface to be easily cleaned and replaced without stopping an apparatus to extract oil. <P>SOLUTION: This oil gauge has: a cylindrical case 1 sealed and fitted to an oil gauge mounting part of the apparatus; and the window body 2 detachably mounted in the case. The oil gauge is provided with a valve mechanism allowing the case inside A to communicate with the apparatus inside B in mounting the window body and stopping the communication between the case inside A and the apparatus inside B in detaching the window body, so that the window body and the reflecting surface can be easily cleaned and replaced without stopping the apparatus to extract the oil. <P>COPYRIGHT: (C)2004,JPO</p> |
