It is possible to expand and also mark coating imperfections as well as edge chips, similarly the definition in the dimensional standard: 5 / S - D; C S' - D'; E A''' where S and D are the definitions for scratches and digs, S' and D' for these defects on the coating and A''' characterizes edge chip as defined above. As explained with regard to the military standard, it is important to explicitly specify which master set the scratches brightness are to be compared to.