GB/Z 24638-2009
AbolishedGeometrical product specifications (GPS) - Linear and angular dimensioning and tolerancing: +/- limit specifications - Step dimensions, distances, angular sizes and radii
产品几何技术规范（GPS） 线性和角度尺寸与公差标注+/-极限规范 台阶尺寸、距离、角度尺寸和半径
Application Summary AI generated
This standard specifies the rules for indicating linear and angular dimensions with symmetrical or asymmetrical +/- limit deviations on technical drawings, specifically for step dimensions, distances, angular sizes, and radii. It is applied in mechanical engineering and manufacturing industries to ensure consistent interpretation of toleranced features during design, production, and quality inspection. The standard supports the Geometrical Product Specification (GPS) framework, enabling unambiguous communication of size limits for non-cylindrical features in product documentation.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.