Is there a way to find the coordinates of an element in Navisworks? I tried to find the coordinate of an element and use it to put a label directly on it. I know that it is possible to find the boundingbox of the element with the API but it seems that the element is not always in the center of the bounding box.
I would suggest you take a look at these posts. Hope they answered your questions:
Developer Technical Services
Autodesk Developer Network