| 摘要 |
<p>A bayonette-type coupling is provided between the meter box (1) and post, formed by an opening in the meter box and a coupling part attached to a fixture at the top of the post. A key operated lock in the meter box is used to move a plate (21) that lifts a catch (23) during locking, lifting it out of a position where it prevents rotation of the coupling part relative to the opening in the meter box.</p> |
