| 摘要 |
PROBLEM TO BE SOLVED: To enable arrangement of an operation switch of a pH meter converter or the like by ensuring an operating space corresponding to the arranging environment of a housing, while dealing with the trouble of the operating switch simply by replacing only a switch unit. SOLUTION: An on-the-spot type meter is equipped with a housing 11 housed in an electric machinery part and an operating switch 30, such as a button switch operable from the outside. The housing 11 has at least two opening parts 12, 13 which are the in shape provided in different directions by drilling. A cable fixing jig 15 holding the outside connecting cable 14 drawn into the housing 11 to be connected to the electronic machinery part is provided to one opening part 13 in a detachable manner. The switch unit 31, containing the operating switch and connected to the electronic machinery part through a connection lead, is mounted to the other opening part 12 in a detachable manner. |
