In practice: The measured value must be inside that are the specification limits “shrunk” by (U) on both sides.
The International Organization for Standardization (ISO) has developed a series of standards under the Geometrical Product Specifications (GPS) to provide a framework for specifying and verifying the geometrical characteristics of products. One such standard is ISO 14253-1:2017, which focuses on the inspection by measurement of workpieces and measuring equipment. This article aims to provide an in-depth understanding of the standard, its significance, and its application in various industries. INTERNATIONAL STANDARD ISO 14253 1.pdf
| Standard | Role | |----------|------| | ISO 14253‑2 | How to estimate uncertainty in GPS measurement (based on inter‑laboratory comparisons or design of experiments) | | ISO 14253‑3 | Role of measurement uncertainty in limiting decisions (calibration of artefacts) | | ISO 14253‑4 | Decision rules for proving conformance for non‑normal distributions | | ISO/IEC 17025 | Testing/calibration labs — requires decision rules with uncertainty | | ISO 9001 | Clause 7.1.5 — monitoring and measuring resources — implies conformance decisions with uncertainty | | VIM (JCGM 200) | Basic metrology vocabulary | In practice: The measured value must be inside