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<p>[QUOTE=&quot;Bacchus, post: 25245496, member: 759&quot;]In that case I&#039;m set.&nbsp; I thought I had read that some of the Sigma testers were better than others (i.e., the newer more expensive models) at depth.</p><p><br /></p><p>I agree with categorizing the Sigma as an electromagnetic tester.&nbsp; I latched onto their &quot;PMV&quot; product nomenclature and didn&#039;t give it due consideration.</p><p><br /></p><p>If an XRF can be fooled by plating (and for some reason I had thought it was the <i>ultimate</i> gold tester ... maybe I was misled by its ultimate price) then what are its advantages over a Sigma?[/QUOTE]</p><p><br /></p>

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