This product is used to measure and evaluate the machining precision of automatic inside and outside circularity grinder used for bearing, automobile and internal-combustion engine industry, such as Mz204、Mz208、3Mz203、MzW204、 MzW308 etc.
　The product has advantages of advance technology, complete specification, superior quality and durability. Because of the difference of type and－ appearance, the customers can choose suitable measure claw.