Quite often it's the calibration of your measuring equipment that highlights the need for repair, so it only makes sense that your source for calibration can also repair your measuring equipment. Whether it's a minor adjustment or a major repair, it's usually less expensive to repair than to replace. Here are some common reasons for repair:
Tool no longer repeats measurements.
Tool has been dropped.
Tool has become jammed or siezed.
Too much play.
Tool does not operate smoothly.
Suspect of inaccurate readings.
Digital display returning error messages or nothing at all