3. Impact of the measure on product definition

Knowledge of the standard is not enough to ensure that requirements are written in such a way that the final product, produced and measured, can be considered unambiguously compliant. The control operation must be anticipated at the time the requirement is written.

Here are two concrete examples.

• Example 1: coaxiality of two shaft spans (figure 10 )

  This type of writing, which complies with the requirements of the standard and reflects the designer's idea (in this case, for example, the correspondence of the axes of two bearing seats), may prove unsuitable. In this case, there's a good chance that all the parts measured will not conform to the drawing,...