Geometrical product specifications (GPS) - Geometrical tolerancing - General geometrical specifications and general size specifications (ISO 22081:2021)

This document gives the rules of definition and interpretation of general specifications defined
according to ISO 8015 (general tolerancing) applicable on the whole workpiece.
The general specifications can be applied to integral surfaces only, i.e. integral lines are
excluded.
The general geometrical and dimensional specifications defined in this document applies to the
following:
- for dimensional specifications:
- for features of size:
- linear size (±) (according to ISO 14405-1);
- angular size (±)(according to ISO 14405-3);
- for geometrical specifications:
- for integral features:
- geometrical specifications with the characteristic surface profile (⌓).

Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Allgemeine geometrische und Maßspezifikationen (ISO 22081:2021)

Dieses Dokument gibt Regeln zur Festlegung und Interpretation allgemeiner geometrischer Spezifikationen und allgemeiner Größenmaßspezifikationen nach ISO 8015:2011, 5.12.
Allgemeine Spezifikationen, die in anderen Normen festgelegt sind, und der Zusammenhang mit diesen Normen werden in diesem Dokument nicht behandelt.
Die in diesem Dokument festgelegten allgemeinen geometrischen Spezifikationen und allgemeinen (linearen oder Winkel )Größenmaßspezifikationen gelten ausschließlich für integrale Geometrieelemente (einschlie߬lich Größenmaßelemente).
Diese Spezifikationen sind nicht anzuwenden für abgeleitete Geometrieelemente oder integrale Linien (siehe ISO 17450 1 für die Begriffsbestimmungen von integralen Geometrieelementen und abgeleiteten Geometrie¬elementen).
Andere als lineare Größenmaße oder Winkelgrößenmaße (siehe ISO 14405 2) werden in diesem Dokument nicht behandelt.

Spécification géométrique des produits (GPS) - Tolérancement géométrique - Spécifications géométriques générales et spécifications de taille générales (ISO 22081:2021)

Le présent document donne les règles de définition et d'interprétation des spécifications géométriques générales et des spécifications de taille générales définies selon l'ISO 8015:2011, 5.12.
Les spécifications générales définies dans d'autres normes, et le lien à ces normes, ne sont pas couverts par le présent document.
Les spécifications géométriques et les spécifications de taille (linéaire ou angulaire) générales définies dans le présent document s'appliquent uniquement aux éléments intégraux (y compris les entités dimensionnelles).
Ces spécifications ne s'appliquent pas aux éléments dérivés ou aux lignes intégrales (voir l'ISO 17450-1 pour les définitions des éléments intégraux et des éléments dérivés).
Les dimensions autres que les tailles linéaires ou angulaires (voir ISO 14405-2) ne sont pas couvertes par le présent document.

Specifikacija geometrijskih veličin izdelka (GPS) - Geometrijsko toleriranje - Splošne geometrijske specifikacije in splošne specifikacije velikosti (ISO 22081:2021)

General Information

Status
Published
Public Enquiry End Date
31-Jul-2019
Publication Date
03-Mar-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2021
Due Date
06-May-2021
Completion Date
04-Mar-2021

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SLOVENSKI STANDARD
SIST EN ISO 22081:2021
01-april-2021
Nadomešča:
SIST EN 22768-2:2000
Specifikacija geometrijskih veličin izdelka (GPS) - Geometrijsko toleriranje -
Splošne geometrijske specifikacije in splošne specifikacije velikosti (ISO
22081:2021)
Geometrical product specifications (GPS) - Geometrical tolerancing - General
geometrical specifications and general size specifications (ISO 22081:2021)
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Allgemeine
geometrische und Maßspezifikationen (ISO 22081:2021)
Spécification géométrique des produits (GPS) - Tolérancement géométrique -
Spécifications géométriques générales et spécifications de taille générales (ISO
22081:2021)
Ta slovenski standard je istoveten z: EN ISO 22081:2021
ICS:
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
SIST EN ISO 22081:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 22081:2021

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SIST EN ISO 22081:2021


EN ISO 22081
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2021
EUROPÄISCHE NORM
ICS 17.040.40 Supersedes EN 22768-2:1993
English Version

Geometrical product specifications (GPS) - Geometrical
tolerancing - General geometrical specifications and
general size specifications (ISO 22081:2021)
Spécification géométrique des produits (GPS) - Geometrische Produktspezifikation (GPS) -
Tolérancement géométrique - Spécifications Geometrische Tolerierung - Allgemeine geometrische
géométriques générales et spécifications de taille und Maßspezifikationen (ISO 22081:2021)
générales (ISO 22081:2021)
This European Standard was approved by CEN on 21 January 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22081:2021 E
worldwide for CEN national Members.

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SIST EN ISO 22081:2021
EN ISO 22081:2021 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 22081:2021
EN ISO 22081:2021 (E)
European foreword
This document (EN ISO 22081:2021) has been prepared by Technical Committee ISO/TC 213
"Dimensional and geometrical product specifications and verification" in collaboration with Technical
Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2021, and conflicting national standards shall
be withdrawn at the latest by August 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 22768-2:1993.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 22081:2021 has been approved by CEN as EN ISO 22081:2021 without any modification.

3

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SIST EN ISO 22081:2021

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SIST EN ISO 22081:2021
INTERNATIONAL ISO
STANDARD 22081
First edition
2021-02
Geometrical product specifications
(GPS) — Geometrical tolerancing —
General geometrical specifications
and general size specifications
Spécification géométrique des produits (GPS) — Tolérancement
géométrique — Spécifications géométriques générales et
spécifications de taille générales
Reference number
ISO 22081:2021(E)
©
ISO 2021

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SIST EN ISO 22081:2021
ISO 22081:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

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SIST EN ISO 22081:2021
ISO 22081:2021(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basic principles . 2
4.1 General . 2
4.2 Basic rule . 2
4.3 Indication in a technical product documentation (TPD) . 3
5 General geometrical specification . 3
5.1 Rule for indicating the general geometrical specification . 3
5.2 Rule for the applicability of the general geometrical specification . 4
5.3 Rules for the datum system . 6
6 General size specifications . 7
6.1 Rule for indicating general size specifications . 7
6.2 Rule for the applicability of general size specifications . 7
Annex A (informative) Example of indication with reference to a table in the TPD .9
Annex B (informative) Examples .10
Annex C (informative) Relation to the GPS matrix model .13
Bibliography .14
© ISO 2021 – All rights reserved iii

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SIST EN ISO 22081:2021
ISO 22081:2021(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 290, Dimensional and geometrical product specification and verification, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This first edition cancels and replaces ISO 2768-2:1989, which has been technically revised.
The main changes to ISO 2768-2:1989 are as follows:
— tools have been added to specify a general geometrical specification and a general size specification;
— the rules for application of general geometrical specification and general size specification have
been clarified.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

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SIST EN ISO 22081:2021
ISO 22081:2021(E)

Introduction
This document is a geometrical product specification (GPS) standard and is to be regarded as a general
GPS standard (see ISO 14638). It influences chain links A, B and C of the chain of standards on size,
distance, form, orientation and location.
The ISO/GPS matrix model given in ISO 14638 gives an overview of the ISO/GPS system of which this
document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and
the default decision rules given in ISO 14253-1 apply to the specifications made in accordance with this
document, unless otherwise indicated.
For more detailed information of the relation of this document to other standards and the GPS matrix
model, see Annex C.
This document deals with general geometrical specification and general size specifications, which can
be used to reduce the number of individual specification indications in technical product documentation
(TPD). Many geometrical features have individual specifications which are similar or identical. As an
alternative, general geometrical specifications, general size specifications or both may be applied.
All figures in this document for the 2D drawing indications have been drawn in first-angle projection
with dimensions and tolerances in millimetres. It should be understood that third-angle projection
and other units of measurement could have been used equally well without prejudice to the principles
established.
The figures in this document represent either 2D drawing views or 3D axonometric views and
are intended to illustrate how a specification can be fully indicated with visible annotation. For
possibilities of illustrating a specification where elements of the specification may be available through
a query function or other interrogation of information on the 3D CAD model, and rules for attaching
specifications to 3D CAD models, see ISO 16792.
All figures are not complete and should not be seen as a way to fully specify a part. Theoretically exact
dimensions (TED) which are not indicated are assumed to be obtained from the 3D CAD model.
© ISO 2021 – All rights reserved v

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SIST EN ISO 22081:2021

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SIST EN ISO 22081:2021
INTERNATIONAL STANDARD ISO 22081:2021(E)
Geometrical product specifications (GPS) — Geometrical
tolerancing — General geometrical specifications and
general size specifications
1 Scope
This document gives rules for definition and interpretation of general geometrical specifications and
general size specifications defined according to ISO 8015:2011, 5.12.
General specifications defined in other standards, and the link to these standards, are not covered by
this document.
The general geometrical specifications and general size (linear or angular) specifications defined in
this document apply only to integral features (including features of size).
These specifications do not apply to derived features or integral lines (see ISO 17450-1 for the definitions
of integral features and derived features).
Dimensions other than linear or angular sizes (see ISO 14405-2) are not covered by this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 8015, Geometrical product specifications (GPS) — Fundamentals — Concepts, principles and rules
ISO 17450-1, Geometrical product specifications (GPS) — General concepts — Part 1: Model for geometrical
...

SLOVENSKI STANDARD
oSIST prEN ISO 22081:2019
01-julij-2019
Specifikacija geometrijskih veličin izdelka (GPS) - Geometrijsko toleriranje -
Splošne geometrijske in dimenzijske specifikacije (ISO/DIS 22081:2019)
Geometrical product specifications (GPS) - Geometrical tolerancing - General
geometrical and dimensional specifications (ISO/DIS 22081:2019)
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Allgemeine
geometrische und Maßspezifikationen (ISO/DIS 22081:2019)
Spécification géométrique des produits (GPS) - Tolérancement géométrique -
Spécifications géométriques et dimensionnelles générales (ISO/DIS 22081:2019)
Ta slovenski standard je istoveten z: prEN ISO 22081
ICS:
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
oSIST prEN ISO 22081:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 22081:2019

---------------------- Page: 2 ----------------------
oSIST prEN ISO 22081:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 22081
ISO/TC 213 Secretariat: BSI
Voting begins on: Voting terminates on:
2019-05-27 2019-08-19
Geometrical product specifications (GPS) — Geometrical
tolerancing — General geometrical and dimensional
specifications".
Spécification géométrique des produits (GPS) — Tolérancement géométrique — Spécifications
géométriques et dimensionnelles générales
ICS: 17.040.40
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 22081:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019

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oSIST prEN ISO 22081:2019
ISO/DIS 22081:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 22081:2019
ISO/DIS 22081:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basics principles . 2
4.1 General . 2
4.2 Basics rules . 2
4.3 Application of general dimensional specifications . 3
4.4 General geometrical specification for integral features . 3
4.5 Requirements for datum system . 3
4.6 Theoretical exact dimensions (TEDs) . 3
4.7 Indication in a technical product documentation (TPD) . 3
5 Rules for general geometrical specification . 4
5.1 Characteristic . 4
5.2 Toleranced features for integral features . 4
6 Rules for general dimensional specification . 5
6.1 Characteristic . 5
6.2 Toleranced features for features of size . 6
Annex A (informative) Examples . 8
Annex B (informative) Relation to the GPS matrix model .14
Bibliography .15
© ISO 2019 – All rights reserved iii

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oSIST prEN ISO 22081:2019
ISO/DIS 22081:2019(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification.
iv © ISO 2019 – All rights reserved

---------------------- Page: 6 ----------------------
oSIST prEN ISO 22081:2019
ISO/DIS 22081:2019(E)

Introduction
This document is a geometrical product specification (GPS) standard and is to be regarded as a general
GPS standard (see ISO 14638). It influences the chain link A and B of the chain of standards on size and
location.
The ISO/GPS matrix model given in ISO 14638 gives an overview of the ISO/GPS system of which this
document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and
the default decision rules given in ISO 14253-1 apply to the specifications made in accordance with this
document, unless otherwise indicated.
For more detailed information of the relation of this document to other standards and the GPS matrix
model, see Annex B.
This document deals with general specifications. General specifications can be used to reduce the
number of individual specification indications in technical product documentation (TPD). Many
surfaces have individual requirements which are similar or identical. A single, general specification
may be applied to these instead of multiple individual specifications.
All figures in this document for the 2D drawing indications have been drawn in first-angle projection
with dimensions and tolerances in millimetres. It should be understood that third-angle projection
and other units of measurement could have been used equally well without prejudice to the principles
established.
The figures in this document represent either 2D drawing views or 3D axonometric views on 2D
drawings and are intended to illustrate how a specification can be fully indicated with visible
annotation. For possibilities of illustrating a specification where elements of the specification may be
available through a query function or other interrogation of information on the 3D CAD model and rules
for attaching specifications to 3D CAD models, see ISO 16792.
© ISO 2019 – All rights reserved v

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oSIST prEN ISO 22081:2019

---------------------- Page: 8 ----------------------
oSIST prEN ISO 22081:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 22081:2019(E)
Geometrical product specifications (GPS) — Geometrical
tolerancing — General geometrical and dimensional
specifications".
1 Scope
This document gives the rules of definition and interpretation of general specifications defined
according to ISO 8015 (general tolerancing) applicable on the whole workpiece.
The general specifications can be applied to integral surfaces only, i.e. integral lines are excluded.
The general geometrical and dimensional specifications defined in this document applies to the
following:
— for dimensional specifications:
— for features of size:
— linear size (±) (according to ISO 14405-1);
— angular size (±)(according to ISO 14405-3);
— for geometrical specifications:
— for integral features:
— geometrical specifications with the characteristic surface profile (⌓).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5459, Geometrical product specifications (GPS) — Geometrical tolerancing — Datums and datum systems
ISO 8015, Geometrical product specifications (GPS) — Fundamentals — Concepts, principles and rules
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8015, ISO 17450-1, ISO 17450-2,
ISO 22432, ISO 25378 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
general geometrical and dimensional specifications
general specifications
general dimensional specification(s) and/or general geometrical specification(s)
© ISO 2019 – All rights reserved 1

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oSIST prEN ISO 22081:2019
ISO/DIS 22081:2019(E)

3.2
general geometrical specifications
geometrical specification(s) indicated on the technical product definition (TPD) which is(are) not
directly attached to the features of the workpiece by a leader line
3.3
general dimensional specifications
dimensional specification(s) indicated on the technical product definition (TPD) which is(are) not
directly attached to the features of
...

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