Measurement

Rückführbarkeit

Definition

Eine ununterbrochene, dokumentierte Kette von Kalibrierungen, die ein Messergebnis mit einem nationalen oder internationalen Messstandard verbindet, jeweils mit angegebenen Unsicherheiten.

Erklärung

A factory floor caliper is calibrated against a reference gauge block, which was calibrated against a master gauge block, which was calibrated at a national metrology institute (such as NIST in the US) against the SI meter definition. Each step in this chain has a calibration certificate with quantified uncertainty. Without traceability, measurements from different facilities cannot be reliably compared.

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