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Apparatus for gauging the thickness of coatings on metal products
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Measuring device for measuring the thickness of coatings
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Method and device for magnetically inspecting defects of product
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Apparatus for gauging the thickness of non-magnetic coatings on metal products
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Magnetic spring-controlled winding apparatus for gaging the thickness of non-magnetic coatings on metal products
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Calibration of devices for measuring the thickness of non-magnetic coatings on metal products
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Method of and apparatus for calibrating gauges which measure the thickness of non-magnetisable coatings on magnetisable products
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