TS 10842 EN ISO 3098-3

TS 10842 EN ISO 3098-3 is the standard that addresses the Greek alphabet within technical product documentation lettering. It supports the clear and consistent presentation of Greek letters used as symbols in technical drawings and associated documents. The focus is on the use of these characters as signs in technical communication, where legibility, consistency and suitability for drawing practice matter more than decorative typography.

The role of Greek letters in technical drawings

In engineering, Greek letters are commonly used to denote mathematical quantities, angles, coefficients, phases, fluid properties and other symbolic references. In that context, the goal is not general text composition but compact and widely understood notation. Consistent appearance across drawings, calculation notes and related documents helps reduce misreading and improves technical clarity.

Where this standard applies

This document covers the use of Greek alphabet symbols in technical drawings and associated documents. It is primarily intended for lettering produced with stencils, but it is also useful for freehand lettering or other suitable methods. In other words, its main value is not to define the engineering meaning of the symbols, but to support a common and orderly way of representing them in technical documentation.

Read together with TS EN ISO 3098-0, this part functions as a focused section within the broader rules for lettering in technical product documentation. In practice, standards of this kind help simplify symbol usage, maintain consistency across document sets and reduce ambiguity in engineering communication.