What Does Surface Profile Comparator Mean?
A surface profile comparator is a device used to measure the outermost layer profile height of a material. This data is then used to determine the suitability of a particular coating. A protective coating applied to a surface that is too rough is generally less effective against corrosion.
Corrosionpedia Explains Surface Profile Comparator
A surface profile comparator is primarily used to determine the degree of smoothness of a metallic surface. The height, detail and degree of roughness of a metallic surface is used to evaluate the effectiveness of protective coatings that are applied on said surfaces. Surface profile comparators measure and record the degree of roughness and overall surface topography over the metal's surface.