IMTMA Training Centre

Calibration of Dimensional Measuring Instruments & Evaluation of Measurement Uncertainties

Focus Areas

  • Introduction to Calibration & its relevance to ISO 9000/ QS 9000
  • Care and Environmental influences
  • Calibration Methodologies
  • Documentation aspects of Calibration
  • Calibration and associated uncertainty
  • Relevance of uncertainty for accreditation by NABL
  • Concepts and calculation of Uncertainty in Measurement
  • Different types of errors creeping in Statistical background for uncertainty evaluation
  • Worked‐out examples on calculating Uncertainty in Measurements
  • Laboratory accreditation as per ISO/IEC 17025:2005
  • Accreditation process of NABL
  • Visit to Calibration Laboratory for Demonstration of Calibration processes for typical measuring instruments and equipment

Note : Laboratory visit of participants will be subject to the approval of the hosting Industry.


Obtaining accurate, reliable and traceable measurements is one of the basic requirements in order to achieve required levels of product quality, in any manufacturing activity. No measurement is exact and every measurement is subject to some uncertainty. 'Uncertainty of measurement' is the doubt that exists about the result of any measurement. A measured value is only complete if it is accompanied by a statement of the associated uncertainty.

Measurement uncertainties can occur from the measuring instrument, from the part/component being measured, from environment, from the operator, and/or from other sources. The use of good practice such as traceable calibration, careful calculation, good record keeping, and checking can reduce measurement uncertainties.

This programme is designed to expose participants not only to the concepts of measurement uncertainty, but also provides an understanding of how to actually estimate the measurement uncertainty for different types of measurements.

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