ISO-9177-1-1989.pdf
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1、INTERNATIONAL STANDARD IS0 9177-1 First edition 1989-03-15 Mechanical pencils - Part 1 : Classification, dimensions, performance requirements and testing Porte-mine - Partie 1: Classification, dimensions, caractkristiques de fonctionnement et essais Reference number IS0 9177-I : 1989 (E) Copyright I
2、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:50:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9177-1 : 1999 (E) Foreword IS0 (the International Orga
3、nization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been establis
4、hed has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardizati
5、on. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voti
6、ng. International Standard IS0 9177-1 was prepared by Technical Committee ISO/TC 10, Technical drawings. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless oth
7、erwise stated. 0 IS0 1999 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 permission in writing from the publisher. International Organization for Standardization Case
8、postale 56 l CH-1211 Genbve 20 l Switzerland Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:50:12 MDTNo reproduction or networking permitted without li
9、cense from IHS -,-,- INTERNATIONALSTANDARD IS0 9177-I : 1999 (EI Mechanical pencils - Part I : Classification, dimensions, performance requirements and testing 1 Scope and field of application This part of IS0 9177 specifies a classification, dimensions, performance requirements and testing for hand
10、-held mechanical pencils used for draughting and writing. 2 References IS0 128, Technical drawings - General principles of presentation. IS0 9177-2, Mechanical pencils - Part 2 : Black leads - Classification and dimensions. 3 Definition For the purposes of this part of IS0 9177, the following defini
11、tion applies. mechanical pencil : Hand-held line-producing tool which holds and feeds out a lead, for draughting and/or writing. 4 Classification Mechanical pencils shall be classified according to the type of mechanism (see table 1) and to the nominal diameter (see table 2). For the classification
12、and dimensions of the leads (diameter and length), see IS0 9177-2. Table 1 - Classification according to type of mechanism Tvpe Mechanism classification Description Relevant letter figure F1) Mechanical pencil in which the lead, housed in a barrel, 1 Push-type L2) is fed out by actuating a push mech
13、anism 2 Screw-type S Mechanical pencil in which the lead, housed in a barrel, is fed out by actuating a propelling screw mechanism 3 1) Mainly polymer leads having a nominal diameter of 0,35 to 1 mm. 2) Mainly ceramic leads having a nominal diameter of 2 mm (see IS0 9177-2). Copyright International
14、Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:50:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9177-1 :I989 (El Copyright International Organization for Standardi
15、zation Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:50:12 MDTNo reproduction or networking permitted without license from IHS -,-,- Is0 91x-I:1999 (El In P E Y c J P 3 Copyright International Organization for Standardization Prov
16、ided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:50:12 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9177-1 : 1999 (E) Copyright International Organization for Standardization Provided by IHS under license
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