In form•Z you may add dimensions and text annotation to a 3d model. There are three kinds of dimensions: Linear, Angular, and Radial, and two kinds of simple text: Leader Lines and Notes. While the three dimensions automatically measure a physical quantity, such as a linear distance, leader lines and notes are used to add textual information to a model. An example of each is shown below.

The tools to generate dimensions and text are located in the Text group of tools.
formZ pro