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personnel qualification standard (pqs) - I Marine Expeditionary ...

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Field-expedient method.<br />

Land Navigation 117<br />

117.8 Discuss the procedure for determining the location of an unknown point by<br />

intersection.<br />

Intersection is the location of an unknown point by successively occupying at<br />

least two (preferably three) known positions on the ground and then map sighting<br />

on the unknown location. It is used to locate distant or inaccessible points or<br />

objects such as enemy targets and danger areas. There are two methods of<br />

intersection: the map and compass method and the straightedge method (Figures<br />

6-16 and 6-17).<br />

117-35

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