This course explains advanced theory, application, and variables such as beam profile, near and far zones, acoustic impedance, absorption, and sound characteristics. Other subjects pertaining to angle beam inspection include refraction, mode conversion, and tip diffraction. Vertical/Horizontal linearity and mode converted calibrations are covered. Examination and evaluation of several test specimens is required. This 80-hour course exceeds the instruction outline and criteria specified in the ASNT Recommended Practice SNT-TC-1A.