| 摘要 |
The invention includes a levelling device (1), which includes a top part (3) and a lower part (2) where there in the top part (3) is included a spindle (4), which includes a thread (5) and an external cylindrical surface. (10) and where there in the top part (3) is included a sleeve (6) with a lower sealing item (14) mounted where the sleeve (6) is longer than the spindle's (4) thread (5). With the invention it is achieved that it is possible to manufacture a levelling device (1) where the sleeve (6), as a result of the sleeve (6) being longer than the spindle's (4) thread (5), can not be screwed so high up that parts of the thread (5) on the spindle (4) are exposed. |
