| 摘要 |
<p>A marker for a surface, the marker comprising a body (2) of at least one synthetic material, wherein the body (2) is provided with at least one hole (3) for attachment of the marker to the surface by means of a plug (4) and a screw (5). The material of the body may make the body luminous in the dark, at least when illuminated. A polymer may be used that absorbs light during the day and radiates light by night.</p> |
