This document is a study guide for the ASNT NDT Level III Visual and Optical Testing examination. It is intended for candidates preparing for the 2 hour, 90 question certification test. The guide lists the exam topics including fundamentals of vision and light, equipment such as borescopes and video systems, and applications across raw materials, joining processes and in service components. It…
This document is a study guide for the ASNT NDT Level III Visual and Optical Testing examination. It is designed for candidates preparing for the 2 hour, 90 question certification test. The guide is published by the GAVADE Institute of Nondestructive Testing in Mumbai, India.
The guide lists the exam topics in detail. These include fundamentals of vision and light, ambient conditions, test object characteristics, and equipment such as magnifiers, microscopes, mirrors, borescopes, video systems, and lasers. Applications cover raw materials, joining processes, fabricated components, coatings, and in service materials.
A reference book section provides catalog numbers for six recommended texts. These include the Level III Study Guide, the Supplement to SNT TC 1A, and volumes from the NDT Handbook and ASM Handbook. Contact information for the GAVADE Institute is provided.
The document then presents detailed anatomical descriptions of the human eye. It covers the lens, iris, retina, rods and cones, and the fovea. Conditions such as nearsightedness, farsightedness, and macular degeneration are explained. Diagrams of the eye from front and side views are referenced.
The text continues with explanations of refraction and accommodation by the lens, the structure of optic nerves, and the function of rods and cones in color vision. The early pages establish the foundational knowledge required for the visual testing portion of the exam.