Dimension Tracker : I would like to develop a device which can track/ check the accuracy in dimension of manufacture work. This need to read the CAD drawing for the element ( 2D drawing) drawn in scale and check actual manufactured element as per drawing. A pen locator - will be place /move from one corner to other corner to find out the distance . The accuracy of dimension need to be +/-1mm over a length of 15m. More details can be provided upon request.