Why is an instrument calibrated?

Calibration of an instrument is essential to check and verify its performance to ensure accuracy and reliability in the measurements it provides. This process involves comparing the instrument's readings against a standard reference to determine any discrepancies. By conducting regular calibration, any inaccuracies can be identified and corrected, which is crucial for maintaining the precision of measurements over time.

While options regarding enhancing longevity, adjusting measuring scales, or ensuring availability for use may seem relevant, they do not directly address the primary purpose of calibration. Calibration specifically focuses on performance assessment rather than general maintenance or operational readiness. It is critical in various applications—particularly in fields such as environmental monitoring, healthcare, and manufacturing—where precise measurements are vital for safety and compliance.