| 摘要 |
<p>The tension indicator consists of slide (10) moved in front of a window (16). This is located in a label (14), which has a transparent cover (18) and a scale. At least the slide and the cover define a sealed space. The space contains the window and the part of the label carrying the scale.The connection joints between label and cover, and cover and slide, are sealed. The slide has a smooth surface, which is in constant and tight contact with a zone (17) on the underside of the able, around the window</p> |
