What does traceability rely on for inspection tools?

• A. Calibration schedule and data, plus tool IDs.
• B. The tool's brand popularity.
• C. Random checks without records.
• D. Visual inspection alone.

Answer: (A)

Traceability for inspection tools rests on being able to link every measurement to a known reference standard and to the exact instrument that produced it. This requires a documented calibration schedule and calibration data, plus a unique tool identification. The schedule shows when a tool was calibrated and when the next check is due, ensuring the instrument remains within tolerance. The calibration data provide evidence that the tool was tested against a reference standard and met the required accuracy at that time, including any uncertainty. The tool’s unique ID lets you pull up its full history and prevents mixing records between tools. Together, these elements create a verifiable chain from the measurement result back to the standard.

Choices like brand popularity, random checks without records, or relying on visual inspection alone do not establish that calibration history and identity, so they don’t support traceability.