This equipment is mainly used for measuring the length and exposure height of V-belt, V-ribbed belt, synchronous belt, automotive conveyor belt, belt. Measuring method and technical parameters refer to standard GB 12732-2008 Automotive V-belts, GB/T 12734-2003 Automotive synchronous belts, GB/T 13352-2008 Belt drives-V-belts for the automotive industry and corresponding pulleys-Dimensions, GB/T 13552-2008 Automotive V-ribbed belts.