How is calibration of tools tracked?

• A. Calibration Log
• B. MSR
• C. Tool Inventory List
• D. Maintenance Schedule

Answer: (B)

Calibration status for tools is kept in a centralized official record that shows when each tool was last calibrated, who performed it, and when the next calibration is due. This maintains traceability and supports regulatory and inspection requirements.

The Maintenance Status Report (MSR) serves as that central record. It collects calibration data along with other maintenance information, giving a clear, up-to-date view of tool readiness across the shop and ensuring you can verify calibration history quickly.

A Calibration Log is a useful record, but the MSR functions as the formal maintenance history document that encompasses calibration data for all tools, not just a single log entry. A Tool Inventory List simply lists what tools exist, not their calibration history, and a Maintenance Schedule outlines planned tasks and intervals rather than recording actual calibration results.