| http://www.w3.org/ns/prov#value | - The point k is, as has been noted, not centrally situated with respect to the central north pole but is offset to the right by a distance which, for a symmetrical composite head, is roughly equal to Hc /H???w/2 where Hc is the coercivity of the rope, H is the test head magnetising force, and w is the width of the central pole.
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