TS 10844

TS 10844 is a standard that defines the proportions and dimensions of the symbols used for geometrical tolerancing in technical drawings. Its focus is not on the meaning of the tolerances themselves, but on the measured form of the symbols so they appear consistent, legible, and uniform on drawings. Geometrical tolerancing is used to express not only size, but also geometric characteristics such as form, orientation, location, and run-out.

Form consistency in geometrical tolerance symbols

Standardising symbol dimensions and proportions helps technical drawings communicate with a common visual language. In general drafting practice, such rules support clear recognition of symbols, reduce confusion with dimensions and notes, and help preserve meaning when drawings are reproduced or scaled. Geometrical tolerancing itself is a core part of engineering documentation because it links design intent to acceptable variation in manufactured parts.

What this standard addresses

• Proportions and dimensions of symbols for geometrical tolerancing in technical drawings
• Formal consistency for symbol use on engineering drawings
• Legible and uniform presentation of tolerance symbols in technical documentation

This record was published as equivalent to ISO 7083:1983 and has since been withdrawn. It therefore serves as a historical standardisation reference for the graphical presentation of geometrical tolerancing rather than a current application guide. Geometrical tolerancing remains an important part of design and quality control; this standard addresses the way those symbols are drawn and presented.