Exterior roughness parameter has two major "subdivisions" - profile & areal. Profile attributes provide a more generalized description of an object, while areal attributes give specific information about a specific fragment. Roughness attribute may be assessed in 2 ways. Comparator plates may be used to physically compare the evaluated object with a “benchmark”, or required covering example. Such plates commonly come in sets of multiple segments with various roughness values. A more complicated device can be used to estimate profile parameters of an object. Surface roughness meters, also known as profilometers, are gadgets that evaluate the profile outline. These devices allow determining peak and depression deviations from a surface line, which in turn determines the object’s roughness, density, bearing area, etc. MegaDepot supplies a wide range of covering roughness meters for the best prices.