ISO 6412-2:1989

This part specifies supplementary rules, in addition to the general rules given in part 1, applicable to the isometric representation which shall be used where the essential features are to be shown clearly in three dimensions (for tenders, manufacturing and erection in pipeline construction as well as in machine construction and the construction industry). For the presentation of lettering (proportions and dimensions), see part 1. Annex A contains the bibliography and is for information only.