CEN ISO/TS 14253-3:2007

SLOVENSKI STANDARD
01-april-2008
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Geometrical product specifications (GPS) - Inspection by measurement of workpieces
and measuring equipment - Part 3: Guidelines for achieving agreements on
measurement uncertainty statements (ISO/TS 14253-3:2002)
Geometrische Produktspezifikation (GPS) - Prüfung von Werkstücken und Messgeräten
durch Messen - Teil 3: Richtlinien für das Erzielen einer Einigung über
Messunsicherheitsangaben (ISO/TS 14253-3:2002)
Spécification géométrique des produits (GPS) - Vérification par la mesure des pieces et
des équipements de mesure - Partie 3: Lignes directrices pour l'obtention d'accords sur
la déclaration des incertitudes de mesure (ISO/TS 14253-3:2002)
Ta slovenski standard je istoveten z: CEN ISO/TS 14253-3:2007
ICS:
17.040.01
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN ISO/TS 14253-3
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
December 2007
ICS 17.040.01
English Version
Geometrical product specifications (GPS) - Inspection by
measurement of workpieces and measuring equipment - Part 3:
Guidelines for achieving agreements on measurement
uncertainty statements (ISO/TS 14253-3:2002)
Spécification géométrique des produits (GPS) - Vérification Geometrische Produktspezifikation (GPS) - Prüfung von
par la mesure des pièces et des équipements de mesure - Werkstücken und Messgeräten durch Messen - Teil 3:
Partie 3: Lignes directrices pour l'obtention d'accords sur la Richtlinien für das Erzielen einer Einigung über
déclaration des incertitudes de mesure (ISO/TS 14253- Messunsicherheitsangaben (ISO/TS 14253-3:2002)
3:2002)
This Technical Specification (CEN/TS) was approved by CEN on 8 October 2007 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION
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Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 14253-3:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3

Foreword
The text of ISO/TS 14253-3:2002 has been prepared by Technical Committee ISO/TC 213 “Dimensional and
geometrical product specifications and verification” of the International Organization for Standardization (ISO)
and has been taken over as CEN ISO/TS 14253-3:2007 by Technical Committee CEN/TC 290 “Dimensional
and geometrical product specification and verification” the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO/TS 14253-3:2002 has been approved by CEN as a CEN ISO/TS 14253-3:2007 without any
modification.
TECHNICAL ISO/TS
SPECIFICATION 14253-3
First edition
2002-10-15
Geometrical Product Specifications
(GPS) — Inspection by measurement of
workpieces and measuring equipment —
Part 3:
Guidelines for achieving agreements on
measurement uncertainty statements
Spécification géométrique des produits (GPS) — Vérification par la mesure
des pièces et des équipements de mesure —
Partie 3: Lignes directrices pour l'obtention d'accords sur la déclaration des
incertitudes de mesure
Reference number
ISO/TS 14253-3:2002(E)
©
ISO 2002
ISO/TS 14253-3:2002(E)
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ii © ISO 2002 – All rights reserved

ISO/TS 14253-3:2002(E)
Contents Page
Foreword . iv
Introduction. v
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Reaching an agreement on a stated expanded uncertainty . 4
5 Sequential procedure for evaluating and reaching agreement on an uncertainty statement. 7
Annex A (informative) Relation to the GPS matrix model . 12
Bibliography. 13

ISO/TS 14253-3:2002(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a technical
committee may decide to publish other types of normative document:
 an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an
ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the
parent committee casting a vote;
 an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a
vote.
An ISO/PAS or ISO/TS is reviewed after three years with a view to deciding whether it should be confirmed for a
further three years, revised to become an International Standard, or withdrawn. In the case of a confirmed ISO/PAS
or ISO/TS, it is reviewed again after six years at which time it has to be either transposed into an International
Standard or withdrawn.
Attention is drawn to the possibility that some of the elements of this part of ISO/TS 14253 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 14253-3 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification.
ISO 14253 consists of the following parts, under the general title Geometrical Product Specifications (GPS) —
Inspection by measurement of workpieces and measuring equipment:
 Part 1: Decision rules for proving conformance or non-conformance with specifications
 Part 2: Guide to the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and
in product verification
 Part 3: Guidelines for achieving agreements on measurement uncertainty statements
Annex A of this part of ISO 14253 is for information only.
iv © ISO 2002 – All rights reserved

ISO/TS 14253-3:2002(E)
Introduction
This part of ISO 14253 is a geometrical product specification (GPS) Technical Specification and is to be regarded
as a global GPS Technical Specification (see ISO/TR 14638). It influences links 4, 5 and 6 of all chains of
standards in the general GPS matrix.
For more detailed information of the relation of this Technical Specification to other standards and the GPS matrix
model, see annex A.
ISO 14253-1 provides decision rules for proving conformance or non-conformance with specifications of
workpieces and measuring equipment when taking into account the uncertainty of measurement. ISO/TS 14253-2
provides instructions for preparing uncertainty budgets for determining measurement uncertainty as defined in the
Guide to the Expression of Uncertainty in Measurement (GUM). However, the possibility still exists that
disagreement between customer and supplier can occur on the estimated measurement uncertainty.
It is becoming increasingly common for suppliers to have in place a quality system providing satisfactory assurance
to the customer that the latter is receiving a product which conforms to specifications. This avoids the need for
costly duplicate inspections.
For this reason, the most common case of disagreement over a measurement uncertainty statement or an
uncertainty budget involves the customer questioning the supplier's uncertainty budget. The customer also may
question the measured value of a characteristic of a workpiece or of measuring equipment, thus indirectly
questioning the total uncertainty budget (see ISO 14253-1).
In a rarer case of disagreement, the supplier may question the customer’s uncertainty budget when the customer
rejects a workpiece or measuring equipment (see 6.2 of ISO 14253-1:1998).
In addition to those mentioned, there are other cases of disagreement, as well as other motivations that may lead
to discussion of stated uncertainties.

TECHNICAL SPECIFICATION ISO/TS 14253-3:2002(E)

Geometrical Product Specifications (GPS) — Inspection by
measurement of workpieces and measuring equipment —
Part 3:
Guidelines for achieving agreements on measurement uncertainty
statements
1 Scope
This part of ISO 14253 provides guidelines and defines procedures for assisting the customer and supplier to reach
amicable agreements on disputed measurement uncertainty statements regulated in accordance with ISO 14253-1,
and so avoid costly and time-consuming disputes.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 14253. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 14253 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
ISO 14253-1:1998, Geometrical Product Specifications (GPS) — Inspection by measurement of workpieces and
measuring equipment — Part 1: Decision rules for proving conformance or non-conformance with specification
ISO/TS 14253-2:1999, Geometrical Product Specifications (GPS) — Inspection by measurement of workpieces
and measuring equipment — Part 2: Guide to the estimation of uncertainty in GPS measurement, in calibration of
measuring equipment and in product verification
1)
ISO 14978:— , Geometrical Product Specifications (GPS) — General concepts and requirements for GPS
measuring equipment
1)
ISO/TS 17450-1:— , Geometrical Product Specifications (GPS) — General concepts — Part 1: Model for
geometric specification and verification
1)
ISO/TS 17450-2:— , Geometrical Product Specifications (GPS) — General concepts — Part 2: Basic tenets,
specifications, operators and uncertainties
Guide to the Expression of Uncertainty in Measurement (GUM). BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML,
1st edition, 1993, corrected and reprinted in 1995
International Vocabulary of Basic and General Terms in Metrology (VIM). BIPM, IEC, IFCC, ISO, IUPAC, IUPAP,
OIML, 2nd edition, 1993
1) To be published.
ISO/TS 14253-3:2002(E)
3 Terms and definitions
For the purposes of this part of ISO 14253, the terms and definitions given in ISO 14253-1, ISO/TS 14253-2,
ISO 14978, ISO/TS 17450-1, ISO/TS 17450-2, VIM and GUM, and the following apply.
3.1
operator
ordered set of operations
3.2
specification operator
ordered set of specification operations
NOTE 1 The specification operator is the result of the full interpretation of the combination of the GPS specification or
specifications indicated in the technical product documentation in accordance with ISO GPS standards.
NOTE 2 A specification operator can be incomplete, in which case it could introduce specification uncertainty.
NOTE 3 A specification operator is intended to define, for example, a specific possible “diameter” in a cylinder (e.g. two-point
diameter, minimum circumscribed circle diameter, maximum inscribed circle diameter, Least Squares circle diameter), and not
the generic concept “diameter”.
NOTE 4 The difference between the specification operator and the functional operator causes correlation uncertainty.
3.3
verification operator
ordered set of verification operations
NOTE 1 The verification operator is the metrological emulation of a specification operator. The verification operator is the
basis for the measurement procedure.
NOTE 2 A verification operator might not be a perfect simulation of the given specification operator. In that case, the
differences between the specification operator and the verification operator will result in uncertainty contributors, which are part
of the measurement uncertainty.
3.4
actual specification operator
specification operator derived from the actual specification given in the actual technical product documentation
NOTE 1 The standard or standards according to which the actual specification operator is to be interpreted are identified
explicitly or implicitly.
NOTE 2 An actual specification operator can be a complete specification operator or an incomplete specification operator.
NOTE 3 An actual specification operator can be either a special specification operator or a default specification operator.
3.5
actual verification operator
ordered set of actual verification operations
NOTE The actual verification operator can be chosen so that it is different from the required perfect verification operator.
The divergence between the perfect verification operator and the chosen actual verification operator is the measurement
uncertainty (sum of the method uncertainty and implementation uncertainty).
3.6
perfect verification operator
verification operator based on a full set of perfect verification operations performed in the prescribed order
NOTE 1 The only measurement uncertainty contributions from a perfect verification operator are from metrological
characteristic deviations in the implementation of the operator.
NOTE 2 The purpose of calibration is generally to evaluate the magnitude of these measurement uncertainty contributors,
originating from the measuring equipment.
2 © ISO 2002 – All rights reserved

ISO/TS 14253-3:2002(E)
3.7
specification uncertainty
uncertainty inherent in an actual specification operator when applied to a real workpiece/feature
NOTE 1 Specification uncertainty is of the same nature as measurement uncertainty and can — if relevant — be part of an
uncertainty budget.
NOTE 2 The specification uncertainty quantifies the ambiguity in the specification operator.
NOTE 3 For the purposes of this part of ISO 14253, specification uncertainty is considered part of the compliance
uncertainty.
NOTE 4 Specification uncertainty is a property related to the actual specification operator.
NOTE 5 The magnitude of the specification uncertainty is also dependent on the expected or actual variation of the
geometrical characteristics (deviations of form and angularity) of workpieces.
3.8
simplified verification operator
verification operator including one or more simplified verification operations or deviations from the prescribed order
of operations, or both
NOTE 1 The simplified verification operations, deviation in the order of operations, or both, cause measurement uncertainty
contributions in addition to those measurement uncertainty contributions from the metrological characteristic deviations in the
implementation of the operator.
NOTE 2 The magnitude of these uncertainty contributions is also dependent on the geometrical characteristics (deviations of
form and angularity) of the actual workpiece.
3.9
measuring task
quantification of a measurand according to its definition
[ISO/TS 14253-2:1999, definition 3.3]
3.10
basic measurement task
measurement task(s) which, alone or together with others of its kind, forms the basis for the evaluation of more
complicated characteristics of a workpiece or measuring equipment
[ISO/TS 14253-2:1999, definition 3.4]
3.11
overall measurement task
complicated measuring task, evaluated on the basis of several, possibly different, basic measurements
[ISO/TS 14253-2:1999, definition 3.5]
3.12
measurement
set of operations having the object of determining a value of a quantity
[VIM:1993, definition 2.1]
NOTE For the purposes of this Technical Specification, the term “measuring process” is used as a synonym for
measurement.
3.13
basic measuring process
basic measurement
measuring process which, alone or together with others of its kind, forms the basis of the evaluation/measurement
of more complex GPS characteristics
ISO/TS 14253-3:2002(E)
3.14
overall measuring process
overall measurement
complex measuring process consisting of several, possibly different, basic measuring processes
3.15
task-related calibration
calibration of only the metrological characteristics which influence the measurement uncertainty for the intended
use
NOTE 1 A task-related calibration will normally include only the calibration of those metrological characteristics having a
major influence on the measurement uncertainty for the intended use.
NOTE 2 Task related-calibrations can be performed using other, more economical proce
...