TS 10845

TS 10845 is a withdrawn standard for the line types used in technical drawings and the thicknesses assigned to them. In drafting practice, lines are the basic visual language of a drawing: they distinguish visible edges, hidden details, axes, dimensions, and auxiliary construction information. The main focus of this standard is the consistent definition of line types and line weights.

The role of linework in technical drawing

In engineering graphics, linework directly affects how a part is read and interpreted. The distinction between thick and thin lines helps separate the principal outline from secondary information such as centerlines, dimensioning elements, section indicators, and construction aids. For that reason, line type and line weight are not merely stylistic choices; they carry technical meaning in the drawing.

What this standard covers

Based on the supplied scope, TS 10845 covers technical drawing lines and the system of types and thicknesses given in Table 1. This indicates that the standard serves as a reference for classifying linework and for defining the basic line characteristics used in drawings. In general technical terms, standards of this kind help different people and organisations read the same drawing in a consistent way.

• It regulates the distinction between line types.
• It addresses the classification of line thicknesses.
• It provides a common graphic basis for readability and consistency in technical drawings.
• The standard has been withdrawn and should be understood as a historical reference.