Markups | Center Line
Create
Select "Center Line" button. 
This tool works almost in the same was as Radius tool, with one exception: Center line and any point on surface method is not availble. See for Radius tool detailed specification.
See Also
Select "Center Line" button. 
This tool works almost in the same was as Radius tool, with one exception: Center line and any point on surface method is not availble. See for Radius tool detailed specification.