Scratch Testers are used to assess the coating adhesion on many different types of substrates such as metal alloys, semiconductors, glass, and refractive materials. It is used to test the relative homogeneity of materials, the adhesive qualities of protective coatings and the effects of age on similar materials. It uses a small diamond stylus to test the adhesion of coatings. The diamond with a radius of 200µm is scratched across the coated surface of a substrate at a constant velocity whilst a load is applied with a constant loading rate. It causes stresses to increase at the interface between the coating and the substrate that result in delamination or chipping of the coating to occur. A variety of materials can be tested including coatings, metals, ceramics, composites, polymers, and other material surfaces. It can be easily interchanged to perform a wide variety of scratch tests. It feature includes uni-directional or bi-directional sliding, normal load is constant, stepped or ramped, separate parallel tracks possible on a single test sample, uni-directional or bi-directional passes over the same track possible, windows TriboDATA data acquisition software is included to record and graph test results, built-in CCD camera included to capture scratch scar image.