Replacement Part List

Continue walking, with the receiver straight in front of you and close
to the ground, toward the other Crossing Null marker. As you pass over the
Peak Spot on your way there, you will encounter the peak signal. Keep
moving in the same direction (adjust the sensitivity to keep the meter needle
in the center), and you will find another sudden signal drop-off. This is the
“Back Null”, and it should be about the same distance from the Peak Spot as
the Front Null was. Mark this spot also.
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