A free program for Android, by Tech Soft 3D.

3D PDF Reader is a tool for viewing 3D PDF content on your mobile device, whether you’re on the train, at your desk, or in a meeting. It’s optimized for both tablets and smartphones and is compatible with all mobile devices that support 3D PDFs. It’s easy to use, and intuitive and comes with built-in tools for viewing and modifying 3D PDFs, including tools for editing mesh geometry and visualizing complex 3D shapes.

Here are some of the key features:• Queries the part names of objects• Calculates physical properties on a per-part basis• Selects PMI to determine associated features