ISO INTERNATIONAL STANDARD 1938-2 First edition 2017-01 Geometrical product specifications (GPS) Dimensional measuring equipment - Part 2: Reference disk gauges Spécification geométrique des produits (GPS) - Equipement de mesurage dimensionnel - Partie 2: Disques de réference pour calibres Reference number ISO 1938-2:2017(E) International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @ IS0 2017 ted without license from IHS IS0 1938-2:2017(E) COPYRIGHT PROTECTED DOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either Iso at the address below or Iso's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internatinir DrganizationforStandardization Licensee-ZHEJIANG INST.OF STANDARDIZoISQ37 -All rights reserved Not for Resale, 2017/3/28 03:02:00 No reproduction or networking permited without license from IHS IS0 1938-2:2017(E) Contents Page Foreword .iv Introduction. .. 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms ..2 5 Design characteristics. .2 :6 Metrological characteristics Maximum permissible limits on metrological characteristics .3 8 Marking ..5 Annex A (informative) Material measure (reference) of the working size, wS, of a gap gauge ..6 Annex B (informative) Relation to the GPS matrix model .9 Bibliography .11 iii nSee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ithout license from IHS