EVS-EN ISO 286-1 kohaselt tolerantsivahemik sisaldab ülemise ja alumise piirmõõtme vahe, mis on määratud tolerantsi ulatusega ja oma asendiga nimimõõtme suhtes, seejuures tolerantsivahemik ei pea tingimata sisaldama nimimõõdet ja tolerantsi piirid võivad olla kahepoolsed (väärtused on mõlemal pool nimimõõdet) või ühepoolsed (mõlemad väärtused on ühel pool nimimõõdet).
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Eelmine termin „tolerantsitsoon vs tolerantsiväli”, mida kasutati lineaarses dimensioneerimises, (vastavalt ISO 286-1:1988) on muudetud „tolerantsivahemikuks” (“tolerance interval”), sest vahemik iseloomustab ulatust skaalal, kuna aga tolerantsitsoon iseloomustab ruumi või pinda, so tolereerimist vastavalt standardile EVS-EN ISO 1101.
For the purpose of ISO 286, the tolerance interval is contained between the upper and the lower limits of size, and it is defined by the magnitude of the tolerance and its placement relative to the nominal size, whereby the tolerance interval does not necessarily include the nominal size. Tolerance limits may be two-sided (values on both sides of the nominal size) or one-sided (both values on one side of the nominal size).
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The former term “tolerance zone”, which was used in connection with linear dimensioning (according to ISO 286-1:1988), has been changed to “tolerance interval” since an interval refers to a range on a scale whereas a tolerance zone in GPS refers to a space or an area, e.g. tolerancing according to ISO 1101.
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