ISO INTERNATIONAL STANDARD 3272-4 First edition 1994-02-01 Microfilming of technical drawings and other drawing office documents Part 4: Microfilming of drawings of special and exceptional elongatedsizes Micrographie des dessins techniques et autres documents de bureau d'études Partie 4: Micrographie des dessins de formats allongés spéciaux et exceptionnels ISO Reference number ISO 3272-4:1994(E) ISO 3272-4:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide 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 a vote. IsO/Tc171,Micrographicsandopticalmemoriesfordocumentandimage recording, storage and use. Iso 3272 consists of the following parts, under the general title Micro- filming of technical drawings and other drawing office documents: Part 1: Operating procedures - Part2:Quality criteriaand controlof 35mm silvergelatin microfilms Part3:Aperturecardfor35mmmicrofilm Part 4: Microfilming gof drawings of special and exceptional elongated sizes Part 5: Test procedures for duplicating diazo microfilm images in aperture cards Part 6: Enlargement from 35 mm microfilm, quality criteria and con- trol ISO 1994 All rights reserved. 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 per- mission in writing from the publisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO3272-4:1994(E) Introduction Drawing offices produce, in addition to drawings, documents which differ in purpose, form and intention. Easy exchanges of such documentation between organizations should be possible without ambiguities arising from the use of the information they contain. Microfilming enables the information contained in drawing office docu- ments to be reduced to small dimensions thus facilitating survey, trans- port, handling and storage. Faithful reconstitution of a microform can only with respect to dimensions and quality. The quality requirements them- selves can be fulfilled readily only if the original document complies with standards for the preparation of drawings for microfilming.