ISO 14253-2-2011 PDF

Full title and description

Geometrical product specifications (GPS) — Inspection by measurement of workpieces and measuring equipment — Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification. This part provides practical guidance for applying the principles of the Guide to the expression of uncertainty in measurement (GUM) within GPS-related calibration, verification and measurement activities and introduces the iterative Procedure for Uncertainty MAnagement (PUMA) for industry use.

Abstract

ISO 14253-2:2011 gives guidance on implementing the GUM concept in industry for calibration of measurement standards and measuring equipment, and for measurement of workpiece GPS characteristics. It aims to promote comprehensive uncertainty statements to enable international comparison of measurement results and to support decision-making about conformity with specifications. The standard introduces an iterative, upper‑bound approach (PUMA) to estimate and manage measurement uncertainty while balancing risk and cost.

General information

• Status: Published (confirmed as current in recent ISO review).
• Publication date: April 2011 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 17.040.40 (Geometrical product specification (GPS)).
• Edition / version: Edition 1 (2011); Technical corrigendum ISO 14253-2:2011/Cor 1:2013 also exists.
• Number of pages: 71 (as published by ISO).

Core bibliographic and lifecycle details are those recorded by ISO; a technical corrigendum was published in 2013.

Scope

ISO 14253-2:2011 provides guidance for estimating measurement uncertainty in the context of GPS: calibration of measurement standards and instruments, measurement of workpiece characteristics, and product verification. It is intended to be used alongside ISO 14253-1 (decision rules) and the GUM family of documents for consistent uncertainty statements and for making conformity decisions based on measurements. The standard is written for practical industrial application and emphasises an iterative, economical approach to uncertainty budgeting (PUMA).

Key topics and requirements

• Introduction and application of the GUM principles to GPS measurement and calibration activities (practical interpretation for industry).
• Procedure for Uncertainty MAnagement (PUMA) — an iterative, upper‑bound strategy for estimating and controlling measurement uncertainty.
• Guidance on producing uncertainty statements for single measurement results, comparisons of results, and conformity assessments against tolerances or MPEs (maximum permissible errors).
• Recommendations for using uncertainty estimates in supplier–purchaser comparisons and for economically balancing risk, effort and cost when reducing uncertainty.
• Reference to decision rules for conformity (see ISO 14253-1) and to the wider JCGM/GUM measurement uncertainty guidance.

Typical use and users

Primary users are calibration laboratories, metrology and quality engineers in manufacturing, inspection and test laboratories, developers and users of coordinate measuring machines (CMMs) and other GPS measurement systems, and organisations responsible for product verification or supplier–purchaser measurement comparisons. The standard is applied when establishing uncertainty budgets, calibrating measuring equipment, deciding conformity/non‑conformity with GPS tolerances, and when documenting uncertainty for contractual or traceability purposes.

Related standards

Key related documents include ISO 14253-1 (Decision rules for proving conformity or nonconformity with specifications) and the international guides on measurement uncertainty (the GUM family / JCGM 100 series). ISO/TC 213 GPS suite and related national/adopted EN or DIN equivalents are also relevant when applying ISO 14253-2 in regulatory or contractual contexts.

Keywords

GPS, geometrical product specifications, uncertainty of measurement, GUM, PUMA, calibration, measurement uncertainty, product verification, conformity assessment, ISO 14253-1, metrology

FAQ

Q: What is this standard?

A: ISO 14253-2:2011 is an ISO international standard giving guidance for estimating and managing measurement uncertainty specifically within the field of geometrical product specifications (GPS) — addressing calibration of measuring equipment, measurement of workpiece characteristics and product verification.

Q: What does it cover?

A: It covers practical application of the GUM principles to GPS, introduces the iterative PUMA approach to uncertainty management, and provides guidance on producing uncertainty statements and using them for comparisons and conformity decisions.

Q: Who typically uses it?

A: Calibration laboratories, quality/metrology engineers, manufacturers using CMMs and other GPS measurement systems, and organisations conducting product verification or supplier–purchaser measurement comparisons.

Q: Is it current or superseded?

A: The published 2011 edition is recorded by ISO and was subject to a technical corrigendum in 2013; ISO records show the publication was last reviewed/confirmed in a subsequent review cycle (confirmed as current on ISO record updates). Users should check national/adopted versions (EN/DIN/others) for editorial conversions or later consolidated national publications.

Q: Is it part of a series?

A: Yes — it is Part 2 of ISO 14253 (inspection by measurement). It is intended to be used together with ISO 14253-1 (decision rules) and alongside the GUM/JCGM guides on uncertainty of measurement.

Q: What are the key keywords?

A: Measurement uncertainty, PUMA, GUM, GPS, calibration, conformity assessment, product verification, CMM, ISO 14253-1.