The Alpha® IG-331 portable gloss meter measures the reflective index of light. The handy tool enables quick, accurate measurements of gloss on flat, polished surfaces. This allows the service provider to ensure quality control and set a quality standard for floor restoration and fabrication work. It also allows the service provider to demonstrate before and after results. The Alpha® Gloss Checker can also be used to indicate grit changes during the polishing process. The IG-331 features a detachable meter that enables access to areas commonly difficult to reach. This useful tool can also be used in other industries that require accurate measurements of flat polished surfaces.