ISO INTERNATIONAL STANDARD 3098-5 First edition 1997-12-15 Technical product documentation - Lettering - Part 5: CAD lettering of the Latin alphabet, numerals and marks Documentation technique de produits - Ecriture - Partie 5: Ecriture en conception assistée par ordinateur de I'alphabet latin, deschiffresetdessignes ISO Reference number ISO 3098-5:1997(E) ISO 3098-5:1997(E) Foreword IsO (the International Organization for Standardization) is a worldwide federationofnationalstandardsbodies(lsOmemberbodies).Theworkof 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. SO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard ISO 3098-5 was prepared by Technical Committee ISO/TC10, 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 O: 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 @ISO1997 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 Geneve 20 · Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; o=isocs; S=central Printed in Switzerland ii INTERNATIONAL STANDARD ISO ISO 3098-5:1997(E) Technical product documentation Lettering - Part 5: CAD lettering of the Latin alphabet, numerals and marks 1 Scope 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 CAD lettering using the techniques of numerically controlled lettering and draughting systems. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part ot ISO3o98.Atthetimeofpublication,theeditionsindicatedwerevalid.Allstandardsaresubjecttorevision,and most recent editions of the standards indicated below. Members of IEC and IsO maintain registers of currently valid International Standards. IsO 3098-0:1997, Technical product documentationLettering—Part 0: General requirements. ISO/TR 10623:1991, Technical product documentation — Requirements for computer-aided design and draughting - Vocabulary. 3 Definitions For the purposes of this part of IsO 3098, the definitions given in IsO 3098-0 apply. Further definitions used in computer-aided design and draughting are given in ISO/TR 10623. 3.1 proportional spacing arrangement: Arrangement of graphic characters in the direction of writing spaced according to their natural width. 3.2 tabular spacing arrangement: Arrangement of graphic characters in the direction of writing within a constant-width space at predetermined positions, independent of the natural width of the characters.