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Navigation instrument for the determination of the position on a card from the indications of the latitudes and longitudes
Navigation instrument for the determination of the position on a card from the indications of the latitudes and longitudes
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机译:用于根据纬度和经度指示确定卡上位置的导航仪
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摘要
The instrument includes a rectangular support with its opposite edges (41,42) provided with symmetrical graduations relative to the support longitudinal axis. Similar graduations are provided on the other two sides of the support. The lower side of the support is placed on the latitude of the point to be located on the map. A line is then drawn along the normal side of the support (43). The operation is repeated for the longitude of the point. The intersection of the two lines determines the position of the point.
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