| 摘要 |
1. Device to indicate the direction of the Mecca, comprising : - a compass (20, 46) having a housing (21) and a magnetic needle (24) rotatively mounted inside of said housing, - a dial element (44) mounted opposite to said compass, and rotative with respect to the axes of the magnetic needle, said element being provided with guide marks distributed along its circumference, each of these guide marks corresponding to a town of a predetermined region of the world, and with a direction mark (54) for indicating the direction of the Mecca, the relative angular positions of the guide marks and of the direction mark being such that said direction mark indicates substantially the direction in which is located the Mecca from one of the towns corresponding to said guide marks, if the relative angular position of the dial element with respect to the direction of the north indicated by the magnetic needle in said town is modified in order to bring into coincidence the guide mark of said town with the direction of the north, said device being characterized in that : - the compass (20, 46) is a tight unit located in the bottom (41) of the housing (40), - the dial element is a transparent bezel (44) rotatively mounted on the upper edge of a part of the lateral wall (42) of said housing, said bezel being articulated on the peripheral part of said bottom (41), - a plurality of piled up discs (51), each of them being provided with names of towns of a predetermined region of the world and with the guide marks associated with said towns and identical to the guide marks marked on the dial element, said plurality of discs being located inside of said housing, between said compass and said bezel, said discs being renovable and interchangeable and their dimensions being such that a free end of said magnetic needle remains visible through that bezel. |
