| 摘要 |
The invention described consists of the conversion into rigid panels of boards of mosaics which are always very flexible around the hinges formed by the joints between elements glued under a support. The gluing on the two faces of the mosaics of a support, the opposing actions of which balance each other, convert the flexible board into a rigid panel. A water spirit level glued on the board and an arrow indicating the direction of gluing of the mosaics facilitates the laying of the panels. <IMAGE>
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