CIRP Encyclopedia of Production Engineering

Living Edition
| Editors: Sami Chatti (Editor-in-Chief), Luc Laperrière (Editor-in-Chief), Gunther Reinhart (Editor-in-Chief), Tullio Tolio (Editor-in-Chief), The International Academy for Production


Living reference work entry



Closeness of agreement between indications or measured quantity values obtained by replicate measurements on the same or similar objects under specified conditions (VIM 2012)

The “specified conditions” can be, for example, repeatability conditions of measurement, intermediate precision conditions of measurement, or reproducibility conditions of measurement (see ISO 5725-3 1994).

Theory and Application

Measurement Precision

Measurement precision is usually expressed numerically by measures of imprecision, such as standard deviation, variance, or coefficient of variation under the specified conditions of measurement. Measurement precision pertains to the repeatability of a process but sometimes is erroneously used to mean measurement accuracy. The term accuracy refers to the degree of agreement of the measured dimension with its true magnitude, or, in other words, it is the ability to hit what is aimed...

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Copyright information

© CIRP 2018

Authors and Affiliations

  1. 1.Institute of Industrial Technologies and AutomationConsiglio Nazionale delle RicercheMilanItaly

Section editors and affiliations

  • Robert Heinrich Schmitt
    • 1
  1. 1.Laboratory for Machine Tools and Production Engineering WZL of the RWTH, Aachen UniversityAachenGermany