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Sorry. I didn't even look at the page. If you can find anything close you could use a software program like Meazure The measuring tool that looks like a barbell might work.

In the first picture which has the gable vent the difference between the two angles is 32 degrees. If the vent sloped sides parallel the roof, the roof is 32 degrees. http://www.cthing.com/Meazure.asp This program has an angle measuring feature. I don't know about the other two. Look like about 5/12 or 6/12. Pictures seem to be taken in south Georgia. Brunswick or Darien area?

Yep, same issues here.

This tool here is the best I've found so far.

Meazure - Digital ruler

You can either use multiple lines or use the grid option and change the values till they match where you want to align your visuals.

Look at the 16th pic If that isn't what you are looking for, measure some known dimensions in these pictures and extrapolate the T width. You can measure things on your screen with this program.