What does Out-of-calibration mean?

• A. A precautionary measure to give temporary special instructions
• B. Will not accurately indicate parameters
• C. Prohibits operation of equipment
• D. An instrument is ready for use

Answer: (B)

Out-of-calibration means the device’s readings are no longer within its accepted accuracy, so it cannot be trusted to indicate true parameter values. Calibration aligns a instrument’s output with a known standard; when it drifts or is damaged, the readings become unreliable. Because of that, you shouldn’t rely on its measurements for safety decisions and you should quarantine the instrument, tag it as out of calibration, use a calibrated backup if possible, and arrange for recalibration or servicing. It’s not simply a precaution or a ready-to-use status, and it’s not about prohibiting operation—it's about accuracy being compromised.