What term describes the process of comparing instrument indication with a standard value?

The term that refers to the process of comparing instrument indication with a standard value is calibration. Calibration ensures that an instrument is providing accurate readings by adjusting it to align with known standards. This process is crucial for maintaining the reliability and precision of instruments used in aviation, where even minor discrepancies can lead to significant issues in navigation and aircraft operation.

In aviation, calibration typically involves testing the instrument against a recognized standard or reference to confirm its accuracy. If an instrument reads outside of acceptable limits during this comparison, adjustments are made to bring it back into alignment with the standard value. This is essential for pilots who rely on accurate instrument readings for safe flights, particularly in instrument flying conditions where visual reference may not be available.

Other terms like cross-checking, standardization, and verification involve similar concepts but do not specifically describe the process of comparing instrument indications with a defined standard. Cross-checking typically refers to the practice of comparing readings from multiple instruments to ensure consistency, standardization relates to establishing uniform procedures or specifications across instruments or systems, and verification generally involves confirming the correctness or validity of a process or instrument without the specific focus on the adjustment to a standard reference.