Standards play an important role in visual testing. Depending on the standard required, the NDE
technician can compare the test object to photographs, actual replicas of surface irregularities,
and written criteria.
By the end of this course, you will be able to
• Understand how photographs and replicas of surface irregularities are used in visual
• Know the differences between comparators for the same type of surface irregularity
Course ID Number: NDE-3051