The Cobra Diametric Measuring Machine (DMM) is a basic Cobra CMM, but is expanded to serve primarily the turning industry. It has the same basic structure of the Cobra CMM but has been expanded to include precision fixed and air operated centers. The DMM is a true 3 dimensional piece of equipment that will meet all the requirements of all turning and machining processes. Its special feature will allow it to be used to measure centered or center less parts.