Another way to describe a surface is to measure "gloss". This value is always related to a certain angle (e.g. 20°, 60° or 85°) and does not describe how evenly the reflected light is distributed in space. The gloss value is between 0 and 100, where <10 is low gloss, 10-70 is semi gloss and >70 is high gloss, according to most of the relevant standards, i.e. ISO 2813, ASTM D 523 and DIN 67530.