There are provided a concentric machining device and method. The concentric machining device is used to machine the outer curcumferential surface of a cylindrical body having an inner diameter and an outer diameter with respect to the center of the inner diameter so that the center of the outer diameter...http://www.google.com/patents/US6273783?utm_source=gb-gplus-sharePatent US6273783 - Concentric machining device and method
