Sketchup Go Scan to Design with ipad

Is there any documentation on how accurate the scans are?

For instance:

At 10’ +/- 1/4"
At 20’ +/- 1/2"
At 30’ +/- 1"
and so on…

I saw that you can set the scan quality to 2", but I’d like to know the accuracy from face of wall to face of the opposite wall in the room, or floor to ceiling. I don’t own an iPad yet, but if this proved to be accurate, I would seriously consider getting one just for scanning existing conditions. Of course it would be even better if you could do the same thing in a much more portable and affordable iPhone! There is a thread on that and if you agree please let the developers know!

Also, can you scan more than one room at a time and get good results? If that’s possible, can you scan an entire house in one integrated file?