Tile

摘要

The invention concerns a tile (1) having a display surface (2b) exhibiting a plurality of teeth (9) provided with two transversal surfaces (3a, 4a). A visual symbol (5) is reproduced on a first series of parallel surfaces (3a), while on a second series of parallel surface (4a), which are transversal to the surfaces (3a) of the first series, a further visual symbol (6) is realised different to the first visual symbol (5). An observer views one or another of the visual symbols (5, 6) depending on his or her viewpoint.