ISO 9431:1990

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ISO 9431:1990 is an International Standard that specifies the requirements for the layout, placement, and content of spaces for drawing and text, and title blocks on construction drawings. It was first published in 1990 and last reviewed and confirmed in 2022. The standard is part of the ISO/TC 10/SC 8 technical committee, which deals with technical drawings, product definition, and related documentation.