ISO 2203:1973
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Technical drawings -- Conventional representation of gears

This standard was last reviewed* in 2014.

*ISO standards are reviewed every five years.


Establishes how to draw the toothed portion of gears including worm gearing and chain wheels. Applicable to detail drawings (individual gears) and assembly drawings (gear pairs). As a fundamental principle a gear is represented (except in axial section) as a solid part without teeth, but with the addition of the pitch surface in a thin long dash-and-dot line. For uniformity all figures are in first angle projection.


  • Edition: 1 (Monolingual) ICS: 01.100.20; 21.200
    Status: Published Stage: 90.93 (2014-04-03)
    TC/SC: ISO/TC 10/SC 6 Number of Pages: 6
  • No revision information available

  • No corrigenda or amendments available

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