1 More square on the grid means narrower grid lines and points giving more resolution on the plot but also longer survey duratrions and the net result would still be equivalent in this particular case. Smaller grid resolution would only be useful to locate very small and shallow targets but this is not the right instrument, you'd better use a standard metal detector in those cases.
2 Boxes can never be actually 'seen'. This is not an X-ray or Ultra-Sound technology, we measure the distortion of the earth magnetic field generated by targets made of magnetic material, that's all. However, it is THE technology which has the highest sensitivity to detect those, responding to the physical rule 'one over third power of distance' while the active electromagnetic systems have a sensitivity which responds to the rule of 'one over the fourth power of distance'.
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http://www.thunting.com/smf/index.php/topic,10258.msg64884.html#msg64884
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« Last Edit: December 30, 2009, 12:14:18 pm by willy bayot »
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