发明名称 Device for indicating the direction of a point on the Earth and its method of use
摘要 Device for indicating the direction of a predetermined point on the Earth other than the North Pole, whatever the place of use, comprising a compass 2 and a dial 4 graduated from a marker 7 symbolically indicating the predetermined point. The graduation is encoded beforehand as a function of the longitudes and latitudes of the major countries and cities of the Earth. The device is preferably combined with a watch. Particular application for determining the direction of Mecca. <IMAGE>
申请公布号 FR2631115(A1) 申请公布日期 1989.11.10
申请号 FR19880006205 申请日期 1988.05.09
申请人 BARUC LEON 发明人
分类号 G01C17/10 主分类号 G01C17/10
代理机构 代理人
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