This International Standard specifies the method of using coating thickness instruments of the magnetic type for nondestructive measurements of the thickness of non-magnetic coatings (including vitreous and porcelain enamel coatings) on magnetic basis metals. The method is applicable only for measurements on reasonably flat specimens. In the case of nickel coatings on non-magnetic substrates, the preferred method is that specified in ISO 2361.
GSO ISO 2178:2013 history
2013GSO ISO 2178:2013 Non-magnetic coatings on magnetic substrates -- Measurement of coating thickness -- Magnetic method