Medical device external inspection of the equipment needs to be verified

If we are talking about calibration or verification of accuracy, then all measuring instruments, if by the statutory metrological verification institutions such as metrological institute, metrological institute, qualified state-owned, private, foreign enterprises testing laboratories calibrated or verified, there is no need to validate, but you have to confirm the accuracy of whether the accuracy of the measurement of your measured value. In layman's terms, the accuracy should be equivalent to at least 1/3 of the measured tolerance. if calibration, you also have to determine whether it meets your needs. Because calibration does not give a passing judgment.