Inspection, measuring and testing — calibration

Abstract

Inspection, measuring and testing is a theme that runs right through a manufacturing operation from receipt of materials, to process control and approval of finished goods, and includes management of the equipment used in the tests, and the measured product. Equipment used to take measurements, as distinct from giving an indication, must be properly calibrated to the appropriate national standard. Note the distinction between measurement and indication. If the response to a reading is one of precision, then it is a measurement, but if a wide tolerance is involved or the reading is taken for awareness only, then it is an indication and calibration is not necessary.