Saturday, May 30, 2020, 10:34 AM

Site: Quametec™ Institute of Measurement Technology

Course: Quametec™ Institute of Measurement Technology (QUAMETEC™)

Glossary: QIMT Glossary

T

## Transfer standard Standard used as an intermediary to compare standards. |

## Travelling standard See Standard, travelling. |

## True value (of a quantity) The indefinite form rather than the definite form is used in connection with true value, in that there can be many values that are consistent with the definition of a particular quantity. |

U

## Uncertainty of measurement Parameter, associated with the result of a measurement that characterises the dispersion of values that could reasonably be attributed to the measurand. The estimation of uncertainty in accordance with GUM guidelines is usually accepted. |

## Unit (of measurement) Particular quantity, defined and adopted by convention, with which other quantities of the same kind are compared in order to express their magnitudes relative to that quantity. |

## Unit of measurement (derived) coherent Derived unit of measurement that can be expressed as the product of basic units in powers with the proportionality coefficient 1. |

V

## Value (of a measurand), transformed Value of a measuring signal that represents a given measurand. |

## Value (of a quantity) Magnitude of a particular quantity generally expressed as a unit of measurement multiplied by number. |

## Value, nominal Rounded or approximate value of a characteristic of a measuring instrument that provides a guide to its use. |

## Values, derived Conditions for use intended to keep the metrological characteristics of a measuring instrument specified limits. |