Instrument calibration is the process of ensuring that a measuring instrument or device consistently produces accurate and reliable results. Calibration involves comparing the measurements taken by an instrument to a known standard or reference value and making adjustments as necessary to correct any discrepancies. This process helps to ensure the precision and accuracy of measurements taken by the instrument, which is important in various fields such as science, engineering, and manufacturing. Calibration is typically done regularly to maintain the reliability of instruments and ensure that they continue to provide accurate results over time.