conventional value of a quantity, conventional value, conventional true value, conventional true value of a quantity
suurusele kindlal eesmärgil leppeliselt omistatud väärtus, quantity value attributed by agreement to a quantity for a given purpose, measure-value of a standard used in a calibration operation and known with uncertainty negligible with respect to the uncertainty of the instrument to be calibrated, kalibreerimistoimingus kasutatava etaloni mõõteväärtus, mille määramatus on kalibreeritava mõõtevahendi määramatusega võrreldes tühine