| 摘要 |
The rail device consists of two relatively moveable lockable hollow profiles (1) in a top holder rail (3). The outer end of each profile carries a support unit (14), height-adjustable via a threaded rod (20), which has a running roller (25) at the lower end. The roller is of plastic and is held via a roller bearing in a fork connected to the bar. The threaded bar extends through an aperture of a support rail (15) of the support unit.
|
