Handbook on technical drawings updated in world editionHandbook on technical drawings updated in world edition

Some 154 global standards make up the third and updated edition of the ISO handbook "Technical Drawings." The goal of ISO/TC 10, the technical committee that drafted most of the standards, is to enable a drawing to be interpreted correctly in any country, regardless of language differences. Among the handbook's contents are standards for dimensioning, tolerancing, microcopying, surface texture, graphical symbols, and drawing equipment. A separate section deals with mechanical engineering drawings. You can buy the handbook, which comes in two volumes, from any national member of ISO or from the ISO Central Secretariat at 1 rue de Varembe, CH-1211 Geneva 20.