Visual Testing (VT) is the foundation of inspection—and one of the most misunderstood. Done properly, VT prevents missed defects, reduces false calls, and improves results across every other NDT method. But reliable VT depends on the basics: access, surface condition, lighting, viewing angle, magnification, and knowing what you’re actually looking for. This Q&A handbook teaches VT in a modern, easy-to-use format. You’ll build confidence through clear questions and practical answers—starting with fundamentals and moving into real inspection decisions and exam-style reasoning. What you’ll get inside Structured Q&A by topic : VT principles, inspection conditions, tools, technique, and reporting - Inspection setup made practical : lighting, distance, angles, access limitations, and surface prep - Tools and aids explained : mirrors, magnifiers, borescopes, cameras, gauges, and simple measurement approaches - Discontinuities and workmanship : what common features look like and how to classify them - Reporting and traceability : describing location, orientation, size, and relevance clearly - Exam tips that actually help : what VT questions are really testing and how to avoid trap answers - Common mistakes & fixes : poor lighting, wrong distance, dirty surfaces, misclassification, missing scale, and incomplete reporting - Mock exam + answer key to check readiness and highlight weak areas - Quick reference tables + checklists for revision and on-the-job use Who this book is for Trainee and working NDT personnel who perform VT as a primary method or before PT/MT/UT/RT - Anyone preparing for Level 1 / Level 2 style knowledge checks and written exams - Instructors and supervisors who want a ready-made revision and drill resource Note: This handbook supports learning and good practice. Always follow your approved procedure, acceptance criteria, drawings, and the current revision of your governing standard/specification.