Calibration & Measurement
Calibration is the process of verifying the accuracy of an instrument, and it determines the traceability of the measurement. Calibration should be performed by laboratories certified under ISO standards, providing calibrations that can be traced to the national metrology institutions of standards.
The calibration lab will generate a calibration certificate that includes an identification code when the calibration has been completed. The calibration certificate issued by a calibration laboratory should consist of information such as the details of the laboratory, a description of the instrument, a list of standards used as a reference, calibration results, and a statement of traceability.
Source: https://all3dp.com/4/calibration-of-measurement-instruments-why-is-it-important-ad/