This product is mainly used for bearings, automobile, internal combustion engine industry ( such as Mz204, Mz208, 3Mz203, MzW204, MzW308 ) and other automatic bearing internal and external circular grinding machine, grinding precision measurement evaluation.This product has advanced technology, complete specifications, excellent quality, durability and other characteristics. As a result of measuring claw type, appearance is not exactly the same, so the user can choose a variety of models of the measurement. By supporting the use of.