Assertion: standard | /r/HasProperty | system
Facets:
value: in metrology
type: LOCATION
Source sentences:
text: In metrology (the science of measurement), a standard (or etalon) is an object, system, or experiment that bears a defined relationship to a unit of measurement of a physical quantity.
text: A standard (or etalon) is an object, system, or experiment with a defined relationship to a unit of measurement of a physical quantity.