During a gauge calibration check, a reading of 10 pounds above the calibrated gauge indicates what action?

• A. Replace the gauge.
• B. Recalibrate the gauge.
• C. Ignore the difference.
• D. Retest with a different gauge.

Answer: (A)

A gauge that reads significantly higher than its calibration standard shows the instrument has drifted beyond the allowed tolerance. When a gauge drifts this far, its internal mechanism—like the spring or linkage—has probably worn or stuck. Recalibrating would only reset the reading, but it won’t fix underlying mechanical wear; the gauge is no longer trustworthy. Replacing the gauge ensures you have an accurate, reliable pressure reading for safe operation. Ignoring the difference would be unsafe, and using a different gauge to retest is not a remedy in itself—the proper action is to replace the suspect gauge.