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It provides general principles for how dimensions should be shown, including rules for representing dimension types, handling repeated and auxiliary dimensions, using theoretically exact and symmetrical dimensions, and addressing characters and presentation conventions. 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Unless otherwise specified, or required in the context of its implementation, no part of this publication maybe reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of the requester.  \nISO copyright office  \nCP 401 • Ch. de Blandonnet 8  \nCH-1214 Vernier, Geneva  \nPhone: +41 22 749 01 11  \nFax: +41 22 749 09 47  \nEmail: [copyright@iso.org](copyright@iso.org)  \n[Website: www.iso.org](Website: www.iso.org)[ ](Website: www.iso.org)Published in Switzerland  \nii © ISO 2018 – All rights reserved  \nISO 129-1:2018(E)  \nContents Page  \nForeword ..........................................................................................................................................................................................................................................v  \n[Introduction](Introduction................................................................................................................................................................................................................................vi)[................................................................................................................................................................................................................................](Introduction................................................................................................................................................................................................................................vi)[vi](Introduction................................................................................................................................................................................................................................vi)  \n1 Scope ................................................................................................................................................................................................................................. 1  \n2 Normative references ...................................................................................................................................................................................... 1  \n3 Terms and definitions ..................................................................................................................................................................................... 2  \n4 Presentation of dimensions ...................................................................................................................................................................... 3  \n4.1 Presentation rules ................................................................................................................................................................................ 3 ","cbCaiaSV4DjLVdaa","https://ap.wps.com/l/cbCaiaSV4DjLVdaa","pdf",519606,15,"English","# Foreword\n# Introduction\n# Scope\n# Normative references\n# Terms and definitions\n# Presentation of dimensions\n## Presentation rules\n## Positioning of dimensions\n## Units of dimensions\n# Elements of dimensioning—Usage\n## General","[{\"question\":\"What does ISO 129-1:2018(E) cover?\",\"answer\":\"It covers the presentation of dimensions and tolerances in technical product documentation (TPD). It focuses on general principles and the rules for dimension representation and usage.\"},{\"question\":\"What presentation rules are included?\",\"answer\":\"The document includes rules for dimensions such as repeated dimensions, out-of-scale dimensions, auxiliary dimensions, theoretically exact dimensions, and symmetrical dimensions, as well as characters and presentation conventions.\"},{\"question\":\"Does the standard address positioning and units?\",\"answer\":\"Yes. It includes sections on positioning of dimensions and on units of dimensions, and it also discusses the elements of dimensioning and their usage.\"}]","ISO 129-1 - Part 1: General principles | PDF",1792835732,38]