|Subject Area||Technical Drawings|
|Year of Declaration||2008|
|Number of Pages||9|
|Price||Available on request|
Specifies the recommended proportions and lays down the dimensions for the symbols used to indicate geometrical tolerancing on technical drawings. The symbols and their lettering may be hand-written (using a rule for drawing the frames) or executed by means of other appropriate methods (for example, stencils, transfers, mechanical drawing, etc.). The dimensions of the symbols are based on the standard heights of lettering given ISO 3098/1.