Once you have detected a target, you can avoid digging a large hole by pin
pointing the exact location of the target.
Use the following method for pinpointing using a Double D search coil. Due to the nature of the Double D search coil, the
strongest detection is achieved along a straight line from heel to toe through the center of the coil.
When the target is detected along the sweep line, draw a line at right angels to it, through the center of the coil.
Turn 90 and move along the line just drawn until you detect the target again.
Again, draw a line through the center of the search coil. Where the two lines meet is where the targe lies.
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