ISO 2203:1973

Apply For Services

ISO 2203:1973 is an International Standard that defines the conventional representation of gears in technical drawings. It outlines how to depict the toothed portion of gears, including worm gearing and chain wheels, on drawings, whether detail drawings or assembly drawings. The standard specifies that gears are typically represented as solid parts without teeth, except in axial sections, with the addition of a pitch surface indicated by a thin, long dash-and-dot line.