oSIST prEN ISO 463:2026

SLOVENSKI STANDARD
01-marec-2026
Specifikacija geometrijskih veličin izdelka (GPS) - Merilni instrumenti za merjenje
dolžin - Konstrukcijske in merilne značilnosti indikatorjev (ISO/DIS 463:2025)
Geometrical product specifications (GPS) - Dimensional measuring equipment - Design
and metrological characteristics of indicators (ISO/DIS 463:2025)
Geometrische Produktspezifikation (GPS) - Längenmessgeräte - Konstruktionsmerkmale
und messtechnische Merkmale von Messuhren (ISO/DIS 463:2026)
Spécification géométrique des produits (GPS) - Instruments de mesurage dimensionnel -
Caractéristiques de conception et caractéristiques métrologiques d'indicateurs (ISO/DIS
463:2025)
Ta slovenski standard je istoveten z: prEN ISO 463
ICS:
17.040.30 Merila Measuring instruments
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 463
ISO/TC 213
Geometrical product specifications
Secretariat: BSI
(GPS) — Dimensional measuring
Voting begins on:
equipment — Design and
2026-01-01
metrological characteristics of
Voting terminates on:
indicators
2026-03-26
ICS: 17.040.30; 17.040.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 463:2026(en)
DRAFT
ISO/DIS 463:2026(en)
International
Standard
ISO/DIS 463
ISO/TC 213
Geometrical product specifications
Secretariat: BSI
(GPS) — Dimensional measuring
Voting begins on:
equipment — Design and
metrological characteristics of
Voting terminates on:
indicators
ICS: 17.040.30; 17.040.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 463:2025(en)
ii
ISO/DIS 463:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design characteristics . 3
4.1 General design and nomenclature.3
4.2 Dimensions .3
4.3 Digital indicating display .5
4.4 Dial and pointer display .5
4.5 Contact element .5
4.6 Zero adjustment .6
4.7 Additional functions .6
5 Metrological characteristics . 6
5.1 General .6
5.2 Rated operating conditions .6
5.3 Reference point .6
5.4 Test methods .6
5.5 Hysteresis of error of indication (limited by H ) .7
MPE
5.6 Repeatability of error of indication (limited by R ) .7
MPE
5.7 Test points .7
5.8 Error of indication for the full measuring range, E (limited by E ) .7
MPE
5.9 Error of indication for the partial measuring range (limited by P ) .7
MPE
5.10 Measuring forces .7
5.11 Specifications .8
5.11.1 General .8
6 Determination of conformity to specifications . 8
6.1 General .8
6.2 Measurement uncertainty . .8
6.3 Decision rule .8
7 Marking . . 9
Annex A (normative) Default MPE values for metrological characteristics .10
Annex B (informative) Calibration guidelines for metrological characteristics .12
Annex C (informative) Example diagram of error of indications .13
Annex D (informative) Relationship to the GPS matrix model .15
Bibliography .16

iii
ISO/DIS 463:2025(en)
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 document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see https://www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
https://www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 second edition cancels and replaces the first edition of ISO 13102:2012 and the first edition of
ISO 463:2006 (including ISO 463:2006/Cor 1:2007 and ISO 463:2006/Cor 2:2009) which have been
technically revised.
The main changes are as follows:
— the standards ISO 13102 and ISO 463 have been merged into one standard;
— the figures have been updated;
— general design characteristics have been removed and reference to ISO 14978:2018 has been included;
— metrological characteristics have been clarified and modified;
— requirements for test methods have been included;
— default values for maximum permissible errors have been added.
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/DIS 463:2025(en)
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 links for measuring equipment and calibration on size and
distance in the general GPS matrix (see Annex D).
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 specifications made in accordance with this document, unless otherwise
indicated; see ISO/TR 14253-6 for additional information on the selection of alternative decision rules.
For more detailed information on the relation of this document to other standards and the GPS matrix model,
see Annex D.
v
DRAFT International Standard ISO/DIS 463:2025(en)
Geometrical product specifications (GPS) — Dimensional
measuring equipment — Design and metrological
characteristics of indicators
1 Scope
This document specifies the most important design and metrological characteristics of indicators:
— mechanical dial indicators with analogue indication;
— with electronic digital indication.
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 14253-1, Geometrical product specifications (GPS) — Inspection by measurement of workpieces and
measuring equipment — Part 1: Decision rules for verifying conformity or nonconformity with specifications
ISO 14253-5, Geometrical product specifications (GPS) — Inspection by measurement of workpieces and
measuring equipment — Part 5: Uncertainty in verification testing of indicating measuring instruments
ISO/TR 14253-6, Geometrical product specifications (GPS) — Inspection by measurement of workpieces and
measuring equipment — Part 6: Generalized decision rules for the acceptance and rejection of instruments and
workpieces
ISO 14978:2018, Geometrical product specifications (GPS) — General concepts and requirements for GPS
measuring equipment
ISO/IEC Guide 98-3, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in
measurement (GUM:1995)
ISO/IEC Guide 99, International vocabulary of metrology — Basic and general concepts and associated terms (VIM)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14978, ISO/IEC Guide 99 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
mechanical dial indicator
measuring instrument in which the axial displacements of a plunger are transmitted and magnified by
suitable mechanical means to a pointer which rotates in front of an analogue circular scale.
Note 1 to entry: It may also be provided with a revolution-counting device, e.g. in which a pointer rotates in front of a
scale which indicates the number of revolutions of the pointer or the axial displacement of the plunger.

ISO/DIS 463:2025(en)
3.2
electronic digital indicator
measuring instrument in which the axial displacements of a plunger are obtained by a transducer and
converted into an electronic signal by suitable electronic means and transmitted to a physically integrated
digital display
3.3
inward direction
direction of a plunger when it is pressed into the stem
3.4
outward direction
direction of a plunger when it retracts from the stem
3.5
rest point
point where the plunger protrudes fully from the stem with the contact element not pressed in
3.6
stop point
point where the plunger is fully pushed into the stem with the contact element pressed in
3.7
starting point
lower limit of a measuring range
3.8
end point
upper limit of a measuring range
Key
1 nominal range (span)
2 measuring range (span)
3 pre-range (span)
4 post-range (span)
5 rest point
6 starting point
7 end point
8 stop point
9 inward direction of plunger
10 outward direction of plunger
Figure 1 — Terms used for indicators

ISO/DIS 463:2025(en)
4 Design characteristics
4.1 General design and nomenclature
The design of an indicator shall follow the requirements of ISO 14978, including the common design
characteristics in ISO 14978:2018, Annex C. See Figure 2 for an example of the general design. Digital
indicators with not round bezel are available too.
The design and rigidity of the indicator shall be such that the freedom of movement of the plunger is not
impaired by clamping the stem of the instrument, providing that such clamping is carried out in a proper
manner. Where alternative methods of mounting are provided, e.g. attaching the lug on the back plate, the
design and rigidity of that mounting shall be such that the performance is not impaired.
Key
1 bezel
2 digital display
3 operating buttons
4 stem
5 plunger
6 contact element
7 data output — optional
8 protection cap — optional
9 measuring face
10 flat back plate
11 lug back plate
12 scale
13 limit indicator
14 dial
15 pointer
16 revolution counting device
Figure 2 — Nomenclature of a mechanical dial indicator and an electronic digital indicator
4.2 Dimensions
The indicator shall conform to the dimensions specified in Figure 3, Figure 4, and Table 1 to ensure
interchangeability. The max. dimensions height H, width W and thickness T shall be specified by the

ISO/DIS 463:2025(en)
manufacturer. Mechanical dial indicators are classified according to the bezel diameter due to changing
space conditions and readability. The range in which the diameter shall lie according to the classific
...