| 摘要 |
<p>The power tool, e.g. a drill, has the horizontal and/or vertical alignment and/or axis of rotation indicated by a spirit level (19,20). A tubular spirit level (19) shows horizontal alignment and a pot-shaped spirit level (20) shows vertical alignment and/or the axis of rotation of the tool. The pot-shaped spirit level is double convex. The tubular spirit level is located on top of the tool when the latter is in its working position.</p> |
