1. J. B. Engineering model JB-85579, J. B. Engineering and Sales Co. Inc., 16 Division St. West, Greenwich, Conn. 06830.
2. Automation Industries model US-454, Automation Industries Inc., Sperry Products Division, 8925 Fullbright Ave., Chatsworth, Calif. 91311.
3. Testech model LS 86, Testech Inc., 212 Welsh Pool Road, Exton, Pa. 19341.
4. Automation Industries model US-640 with US-950D, Automation Industries Inc., Sperry Products Division, 8925 Fullbright Ave., Chatsworth, Calif. 91311.
5. Ultra Image Integrity Assurance System, General Dynamics, Electric Boat Division, Eastern Point Road, Groton, Conn. 06340.