What is the purpose of using reference features or standard defect templates in VT?

• A. For naming conventions.
• B. To estimate defect size and maintain consistency.
• C. To ensure equipment uptime.
• D. To determine coating color.

Answer: (C)

In visual testing, reference features or standard defect templates provide a known measuring reference so defect evaluation is consistent. They give a scale or standard shapes against which you compare what you see, allowing you to estimate defect size and apply the same criteria across inspectors and over time. This consistency is what makes acceptance or rejection decisions reliable. The other options don’t fit: naming conventions aren’t about sizing or evaluation, equipment uptime isn’t affected by how defects are measured, and coating color isn’t determined by defect templates.