QIMT Glossary

Definitions of Metrology terms & phrases.

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Correction factor

Factor by which the uncorrected measuring result is multiplied to compensate for a systematic error.

Correction value

Value which added algebraically to the uncorrected result of a measurement compensates for a systematic error.


See Reference material, certified.


National Metrology Laboratory, the national metrological instituteSouth Africa.


The national metrological institute of Australia. The National Measurement Laboratory NML is a National Facility within the Commonwealth Scientific and Industrial Research Organisation CSIRO.


Dead band

Maximum interval through which a stimulus may be changed in both directions without producing a change in response of a measuring instrument.

Derived unit

(of measurement)


A device or substance that indicates the presence of a phenomenon without necessarily providing a value of an associated quantity. E.g. litmus paper.


Value minus its reference value.


Dansk Institut for Fundamental Metrologi. The national metrological instituteDenmark.

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