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"AT-220,AT-230,AT-240 these instruments use magnetic thickness measurement method,can detect the thickness of non-magnetic coating (such as: zinc, aluminum, chromium, copper, rubber, paint etc.) on magnetic metal matrix iron
(such as: iron, steel, alloys and hard-magnetic steel, etc.) without damage.
AT-220F,AT-230F these instruments use vortex thickness measurement method, can detect the thickness of
non-conductive coating (such as:rubber, paint, plastic, anodic oxide film,etc) on non-magnetic metal matrix iron.
(Such as: copper, aluminum, zinc, tin,etc.) without damage.
AT-260, AT-280 these instruments use both magnetic and vortex thickness measurement methods,can detect the
thickness of non-magnetic coating (such as: zinc, aluminum, chromium, copper, rubber, paint etc.) on magnetic metal
matrix iron
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