Gloss meters test the specular reflection on all types of surfaces to determine the consistency. They can test at various angles of incidence depending on the testing standard or requirement. Typically the single angle is 60° and the multi angle units can test simultaneously at 20°, 60° and 85°. Commonly used in the tile, ceramics, flooring and paint industries as a means of quality control for surface finishes. The measurement scale used is GU or Gloss Units.