Arc Length DimensionKeyCreator \ Detail \ Arc-Length-Dimension
Location: Detail>Radial Dimension>Arc Length Dimension
Use this function to create a dimension that shows the length of a curve. The function supports arcs, circles, splines, NURBS splines and conics. You can choose one of four dimension styles, which are illustrated below.
Circular plus Radius:
Circular plus Arrow:
Using the Function:
Note: The dimension appears in the active construction plane. Therefore, you may want to set up the construction plane so that it is the same plane as the selected entity.