Hello,
I thought that perhaps some of the iPhone / iPad users here might find this
interesting. As I own neither of these devices, I'd be interested in hearing
feedback from those here who do. The usual disclaimers apply. No
affiliation, etc.
From the little that I know about the app, it would be nice if a dimensioned
photo could be imported into SketchUp.
http://bigbluepixel.com/photo-measures/
Peter.