| 摘要 |
<p>The device has an auxiliary guiding element connected to a main guiding element by a fixing device i.e. slide block, where the fixing device comprises a locating element and a locking element. A locating block is provided with a scale indicating mark, where edge of the locating block is inclined in a tapered manner. The fixing device comprises a tapered surface that matches with the edge of the locating block. The locating element comprises a steel ball and an elastic element.</p> |
