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Magnetic field intensity or gradient measuring probe
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Compensation of magnetic fields of ferromagnetic apparatus due to the earth magnetic field
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Method and device for magnetographic inspection
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Method of magnetographic inspection of metal parts using a roll of magnetic tape having an adhesive coating
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Arrangement for determining optimum phase position when sorting workpieces by the eddy current test method
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Magnetic particle flaw detector including shield means to protect previously tested surfaces
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Nondestructive testing device for steel parts
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Magnetic flaw detector system for reciprocating pairs of leakage field detectors with means for adjusting the spacing between each pair of detectors
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