the s20 is designed for the grinding of workpieces in individual as well as small and large series production operations. it is ideal in all sectors where small precision components are produced. it is very easy to operat......the s20 is designed for the grinding of workpieces in individual as well as small and large series production operations. it is ideal in all sectors where small precision components are produced. it is very easy to operate and the machine can be reset within a very short time.