Historical
DIN EN ISO 2178:1995
Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method (ISO 2178:1982); German version EN ISO 2178:1995
The document specifies the method of using coating thickness instruments of the magnetic type for nondestructive measurements of the thickness of non-magnetic coatings (including vitreqous and procelain enamel coatings) on magnetic metals.
Deutsches Institut für Normung [din]