Arrangement for attaching a base (10), a tray, a platform or a similar supportto a wall with the help of timingarms (4), (5) attached to the mentioned wall in which case the mentioned basecan be moved with the help of the arms (4), (5).The base can be moved outwards from the wall in horizontal direction at thefirst stage of the moving in which case the first arm(4) and the second arm (5) of the arms are both hinged to be turning out ofthe wall in horizontal direction and the mentioned base(10) is attached to the moveable ends of the arms (4), (5) and that in thearrangement when the moving of the base (10) sidewaysis further continued, an elevation adjustment bar (7) belonging to the secondarm (5) and sliding in the height direction is arrangedto slide downwards and at the same time to set the support elements of thebase (10) lower at the location of the second arm (5) inorder to achieve a tilted position for the base (10).
