Just in case anyone else is searching for something like this:
You might want to compare how different components look like from a specific point a view. Example you want to compare how different production machines look seen from the same point in space.
The attached iLogic External Rule will copy the camera position and extents from the currently active document to all other opened documents. Camera position meaning your point of view in the active Inventor view.
http://beinginventive.typepad.com/being-inventive/2013/09/copy-active-camera-view-to-all-opened-docu...
Thanks Pierre!
Peter