| http://www.w3.org/ns/prov#value | - Further, FIG. 19 is a partly cutaway perspective view illustrating an element 20A to be detected in which a magnetic marker in with of magnetic fine wires 1d, 1e and 1f, each having a two layer stress structure and also having different critical fields H* of magnetic flux reversal, is applied on a fixing plate 19A. All these magnetic fine wires are 30 mm in length.
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