The chill depth for automobile manufacturing industries is a vital parameter that must be determined as a quality control measure for many cast products such as valve stems, crank shafts, cams and cam shafts, etc. The quality control of the manufacturer products is vital to the industries that compete in the world markets. The measurement of the depth of chill is done ultrasonically and the accept/reject decision is conveyed to a trap door in the inspection system that removes the rejected components from the manufacturing line.. The robotic handling system allows for the inspection of more than 8000 valve stems per shift.