VM is an integrated,synthetic manufacturing enviroment exercise to enhance all levels of decision and control in manufacturing enterprise.VN can be described as a simulated model of the actual manufacturing setup which may or may not exist.It holds all the information relating to the process.the process control and management and product specific data.It is possible to have part of the manufacturing plant be real and the other part virtual.Virtual Mufacturing is the use of manufacturing processes to aid in design and products.Figures5.4-5.6illustrate construction of a virtual reality system,data glove and virtual glasses.