The norm ISO 13715 makes it possible to define 6 possibilities to indicate the tolerances of the edges. Thus it is possible to inform a numéric value in the 6 zones of entered by value.

The variation compared to the ideal nominal form can be defined by indication of a size.

If it is necessary to specify, for the size of edge, of the limits of tolerance superior and inferior, the two values must be indicated. The variation limits higher is placed above the variation limits lower (see Examples). The limits of tolerance indicated correspond respectively to the limits of size high and minimal.

  • All the zones are optional.


  • The zones allow each one to enter a decimal or whole numéric value.
  • The value can be preceded by the sign + or the sign -.


See them examples of use.