1. Small and light, real easy to be carried and used. 2. High stability 3 ... stable light source Main Application: 1.All kinds of coating and finishing surface,such as paint,warnishes,printing ... ceramic and polishing tile and so on. 3.The other kinds of matericals and objects,such as plastic ,woodenware and ... paper,etc gloss meter for testing the gloss of marble, granite, ceramic and polishing tile