mõõtevahendi kasutamistingimused, mille korral mõõtevahendi metroloogilised omadused on eeldatavalt etteantud piirides, conditions of use giving the ranges of the measurand and of the influence quantities, and other important requirements, for wich the metrological characteristics of a measuring instrument are intendended to lie within specified limits, tingimuste kogum, mida tuleb täita mõõtmise ajal, eeldusel, et kalibreerimisdiagramm on kehtiv, characteristic which may affect performance of a component, device or equipment, most severe combination of environmental conditions under which a given operation will be permitted to proceed, keskkonnatingimused normaalse mõõteprotsessi läbiviimiseks, conditions of use, giving the range of values of influence quantities for which the metrological characteristics are intended to be within the maximum permissible errors, tingimused, milles esitatakse nende mõjurite väärtuste vahemikud, mis on ette nähtud maksimaalse lubatava mõõtehälbe piiride sätestamisel, set of conditions that must be fulfilled during the measurement in order that a calibration diagram may be valid