This updated ultrasonic testing study guide provides prospective ASNT Level III examinees with a review of the technical knowledge for an ASNT Level III exam. It is intended to be used with a comprehensive NDT text, such as ASNT's Nondestructive Testing Handbook. This edition was updated to the 2011 editions of SNT-TC-1A and CP-105 and includes updated chapter review questions, an updated chapter on codes and standards, new appendices and an entirely new chapter on guided waves.