It's a software that allows you to view and print high-quality 3D designs
It allows you to share Autodesk Inventor data with non-Autodesk Inventor users.
It ixes that are in Autodesk Inventor Release 3 Service Pack 1.
This Service Pack 1 updates Autodesk Inventor 2012.
Autodesk Inventor 2010 Service Pack 1 is an incremental update