This unit of instruction covers the theory of ultrasonic sound, methods of applying soundwaves to test specimens and interpreting results, calibrating the ultrasonic equipment, and the use of standards. Study periods, group discussions, and extensive use of textbooks and training manuals are to be used. These are listed along with references and periodicals. Goals, specific block objectives, and a bibliography are included in the booklet. A quinmester posttest sample is included. (EB)