Arbortext IsoDraw > User's Reference > Palette Window Toolbox > Dimension
  
Dimension
Using the four Dimension tools, you can easily add a dimension to an illustration in the same way as to a technical drawing. The leader lines, dimension arrows and the dimension itself are generated automatically.
Dimensioning is primarily required for drawings in a flat view. Along with the option of overwriting the defaulted dimension in the dialog box, there are also further options for using the tools. Setting dimensions and text information can be added to illustrations for e.g. operating instructions very easily indeed.
Depending on what you want to add a dimension to, the following four dimension tools are available to you: Dimension, horizontal, Dimension, angle, Dimension, radius, and Dimension, diameter.