BS ISO BRITISH STANDARD 14368-3:2003 Mineral and sapphire watch-glasses Part 3: Qualitative criteria and test methods ICS 39.040.10 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTL ABritish Standards BS ISO 14368-3:2003 National foreword This British Standard reproduces verbatim IS0 14368-3:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee STI/53, Specifications and test methods for jewellery and horology, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the “Search" facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication This British Standard was published under the authority Amd. No. Date Comments of the Standards Policy and Strategy Committee on 4December2003 BSI 4 December 2003 ISBN 0 580 43019 7 BS IS0 14368-3:2003 INTERNATIONAL ISO STANDARD 14368-3 First edition 2003-08-01 Mineral and sapphire watch-glasses Part 3: Qualitative criteria and test methods Verres de montres minéraux et en saphir- Partie 3: Criteres qualitatifs et méthodes de controle Reference number ISO 14368-3:2003(E) So BS ISO 14368-3:2003 ii BS IS0 14368-3:2003 Contents Page Foreword 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols.... 5 Criteria. 6 Test under static load . 7 Measuring surface stress. Annex A (informative) Method of checking the appearance ili BS ISO 14368-3:2003 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 non-governmental, in liaison with isO, also take part in the work. isO collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 14368-3 was prepared by Technical Committee ISO/TC 114, Horology, Subcommittee SC 13, Watch- glasses IsO 14368 consists of the following parts, under the general title Mineral and sapphire watch-glasses: Part 1: Dimensions and tolerances 一 -Part 2: Assembly to the case by adhesive orusing a gasket Part 3: Qualitative criteria and test methods iv BS ISO 14368-3:2003 Mineral and sapphire watch-glasses - Part 3: Qualitative criteria and test methods