ISO/TR TECHNICAL REPORT 12888 First edition 2011-08-01 Selected illustrations of gauge repeatability and reproducibility studies Illustrations choisies d'etudes de repétabilite et de reproductibilite par calibre Reference number ISO/TR 12888:2011(E) @ ISO 2011 THS under Not for Resale ISO/TR 12888:2011(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2011 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 either isO at the address below or isO's memberbody inthe country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel.: + 41 22 749 01 11 Fax+ 4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @IsO 2011-All rights reserved itted without license from IHS Not for Resale ISO/TR 12888:2011(E) Contents Page Foreword IV Introductior 1 Scope 2 Terms and definitions. 3 Symbols and abbreviated terms 4 Generic description of GRR studies 4.1 Overview of the structure of GRR studies .. 4.2 Overall objectives of GRR. 4.3 Measurementprocessdescription 4.4 GRR studies methodology . 4.5 Sampling plan for GRR studies ... 4.6 Data analysis (numerically and graphically) 4.7 Conclusions and suggestions ... 5 Description of Annexes A through D. 9 5.1 Comparison of the examples .. 5.2 Example summaries. Annex A (informative) GRR for automated testing of RF performance of cell phones 10 Annex B (informative) RF Metal-ceramics semiconductor package assembly load cell GRR study..... 19 Annex C (informative) GRR for motor shaft radial run-out of the axis 28 Annex D (informative) GRR for the rip-off force of the A/B cover of charges .. 34 Bibliography. 40 Copyrght International OrganizaionforStandardizalonghts reserved ii from IHS