In nearly all types of activities, including those that relate to manufacturing, people and organizations are becoming sticklers for measurement accuracy. Accuracy must be judged on the basis of a measurement pedigree -- a documented line of descent from accepted standards.

NIST has responded to this growing need by creating an online resource that is devoted to matters pertaining to the topic of measurement traceability -- whether the result of a specific measurement can be related to accepted international or national standards through an unbroken chain of comparisons.

Factors that drive the growth of traceability requirements include increasing world trade, growing reliance on laboratory accreditation as a means to ensure confidence in calibration and test reports, the continuing spread of quality standards and, in some technology areas, a proliferation of regulations.

Visitors can read about the new NIST policy on traceability at