Here is a great little thing for Autodesk Maya from Parzival Roethlein. prVertexDistanceNode extends the measure tool functionality in Maya’s Distance Node to something that can calculate the distance between user defined vertex pairs on a component level. Check the script out here.

prVertexDistanceNode – Maya deformer – python API / scripted plug-in from Parzival Roethlein on Vimeo.