| 摘要 |
The scenery is two boards (1,1') that are each formed from a bar (2,2') that supports a frame (3,3'). The boards are each articulated round two horizontal and perpendicular axles (4,5,4',5') and rest on a base (6). A central pole (7) is fixed to the centre of the base and four cables (8-11) pass over the top of the pole. The cables are joined to the edges of the boards. The cables join the back and front outer edges of the plates to the front and back inner edges of the plates.
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