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Paint and Coatings Industry Standards
ISO 3868:1976 ISO 3868:1976 Metallic and other non-organic coatings -- Measurement of coating thicknesses -- Fizeau multiple-beam interferometry method
Specifies a method for the measurement of the thickness of thin, highly reflective coatings (up to 2 ) by the use of Fizeau muliple-beam interferometry. The method described cannot be applied to vitreous enamel coatings. Gives principle, definitions, equipment, factors affecting in the measuring accuracy, calibration, procedure and measuring precision.
