SIST EN ISO 3098-0:1998

SLOVENSKI STANDARD
SIST EN ISO 3098-0:1998
01-maj-1998
7HKQLþQDGRNXPHQWDFLMDL]GHONRY3LVDYDGHO6SORãQH]DKWHYH
Technical product documentation - Lettering - Part 0: General requirements (ISO 3098-
0:1997)
Technische Produktdokumentation - Schriften - Teil 0: Grundregeln (ISO 3098-0:1997)
Documentation technique de produits - Ecriture - Partie 0: Prescriptions générales (ISO
3098-0:1997)
Ta slovenski standard je istoveten z: EN ISO 3098-0:1997
ICS:
01.110 7HKQLþQDGRNXPHQWDFLMD]D Technical product
L]GHONH documentation
01.140.10 3LVDQMHLQSUHþUNRYDQMH Writing and transliteration
SIST EN ISO 3098-0:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3098-0:1998

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SIST EN ISO 3098-0:1998

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SIST EN ISO 3098-0:1998

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SIST EN ISO 3098-0:1998
INTERNATIONAL ISO
STANDARD 3098-0
First edition
1997-12-15
Technical product documentation —
Lettering —
Part 0:
General requirements
Documentation technique de produits — Écriture —
Partie 0: Prescriptions générales
Reference number
A
ISO 3098-0:1997(E)

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SIST EN ISO 3098-0:1998
ISO 3098-0:1997(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.
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.
International Standard ISO 3098-0 was prepared by Technical Committee
ISO/TC 10, Technical drawings, product definition and related
documentation, Subcommittee SC 1, Basic conventions.
ISO 3098 consists of the following parts, under the general title Technical
product documentation — Lettering:
— Part 0: General requirements
— Part 1: Currently used characters
— Part 2: Greek characters
— Part 3: Diacritical and particular marks for the Latin alphabet
— Part 4: Cyrillic characters
— Part 5: CAD lettering of the Latin alphabet, numerals and marks
Annex A of this part of ISO 3098 is for information only.
©  ISO 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii

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SIST EN ISO 3098-0:1998
©
INTERNATIONAL STANDARD  ISO ISO 3098-0:1997(E)
Technical product documentation — Lettering —
Part 0:
General requirements
1  Scope
This part of ISO 3098 specifies the general requirements for lettering, in accordance with all other parts of this
International Standard, to be used in technical product documentation (in particular on technical drawings).
It includes basic conventions as well as rules for the application of lettering using the following techniques:
a) free-hand lettering (by means of an underlaid “grid”);
b) templates (see ISO 9178) and manual lettering instruments;
c) dry transfer systems;
d) numerically controlled lettering and draughting systems.
2  Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions of this part of
ISO 3098. At the time of publication, the edition indicated was valid. All standards are subject to revision, and
parties to agreements based on this part of ISO 3098 are encouraged to investigate the possibility of applying the
most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid
International Standards.
ISO 128-20:1996, Technical drawings — General principles of presentation — Part 1: Basic conventions for lines.
3  Definitions
For the purposes of this part of ISO 3098, the following definitions apply.
3.1  central line: Imaginary line in the middle of each line or line element which is a constitutive part of a graphic
character set.
1

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SIST EN ISO 3098-0:1998
©
ISO 3098-0:1997(E) ISO
NOTES
1  Lines may be drawn by means of tubular technical pens conforming with ISO 9175-1 and ISO 9175-2.
2  The central line is the basic datum for the design of tools for lettering, e.g. engraving tools for templates, programs for
lettering generators.
3.2  graphic character set: Finite set of different graphic characters in a fixed type of lettering, including letters of
a certain alphabet, numerals, diacritical marks, punctuation marks and additional graphical symbols, that is
considered complete for a given purpose (see also ISO 2382-4).
3.3  lettering
(1) Procedure of writing graphic characters taken from a graphic character set on a (technical) drawing carrier (in
addition to the graphical representation).
(2) The whole of the nongraphical information on a (technical) drawing carrier (text, instructions, dimensions, etc.).
(3) The whole of the graphic characters of a graphic character set which can be used for transferring nongraphical
information onto a (technical) drawing carrier.
4  General requirements
The basic characteristics required of lettering are given in 4.1 to 4.3.
4.1  Legibility, which shall be maintained by a space between characters of twice the line width used for lettering.
This spacing may be reduced to one line width for a better visual effect with combinations of particular characters,
e.g. LA, TV or Tr.
4.2  Suitability for the generally used copying processes (diazo copying, microfilming, telefax, etc.).
4.3  Suitability for numerically controlled draughting systems.
5  Dimensions
5.1  Nominal size
The nominal size of lettering is defined by the height ( ) of the outline contour of the upper-case (capital) letters (see
h
figure 1 and tables 1 and 2).
The dimensions shown in figures 1 to 3 as applied to the Latin (L) alphabet shall also be applied to the Cyrillic (C)
and Greek (G) alphabets.
2

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SIST EN ISO 3098-0:1998
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ISO ISO 3098-0:1997(E)
Figure 1
Figure 2 Figure 3
3

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SIST EN ISO 3098-0:1998
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ISO 3098-0:1997(E) ISO
5.2  Location of central lines
The nominal size (h) and the spacing between characters (a) shall be taken as the basis for defining the central line
(see figures 4 and 5). For other dimensions see tables 1 and 2.
hh=−d
1
=+
aa d
1
When CAD lettering is used (see ISO 3098-5), the same sizes are required as for other techniques.
Figure 4
Figur
...