In this modern world, there are always pressure on the designer and the manufacturer to respond to the consumer needs. Rapid product development (RPD) assists manufacturers and designers in meeting the demands by reducing product development time. Engineering involves designing, manufacturing, constructing, and maintaining of products, systems, service and structures. There are two types in a design process: 1) forward engineering; 2) reverse engineering. In this paper, an attempt has been made to derive all the parameters, which are necessary for designing the components of a generator using reverse engineering. Even though lots of methods are available for redesigning, the reverse engineering is selected by performing analytical hierarchy process (AHP). The data acquisition is done using laser scanner device. The data sculpt software draw profile lines using scanned data. Then the exact model is created using Pro E software. The manufacturing drawing is prepared using the collected data.