I have been doing lots of Papervision 3D for a project recently and needed to debug some placement and camera issues. I did a quick search and found PV3DDebug by Jason Bejot and it worked out great and is a pretty sweet utility I thought I would mention when you need to debug Papervision or even for inclusion as a debug console in all your papervision apps and games. It is a good base for your own consoles or debug panels. It is also a great tool to help out with focus and zoom issues and understanding with camera placement.
The code is really easy to drop in and you can get lots of info on the PV3D scenes and camera manipulation.