The image set to a 9.7 inch screen size HP TouchPad delivers a 5.9 inch diagonal screen size iPad Air. Even including bezels 7.1 inch. If the iPad mini would be 7.85 inch in screen-size, these picture dimensions are totally wrong.

The image set to my 24 inch HP LP2475w for my desktop looks ok.
But I do not use the portrait setting of that one (allthough I could).

So, for users already having a mobile device (also a market) using this in portrait, this application isn't suitable. I rest my case.

My statement seems to be valid for holding in portrait, not landscape! Portrait would be most users attempt, I guess.

Why all this rigamarole to get the size of this thing!?
I've been through over a dozen articles and not one has mentioned the actual width and height!
Does anybody have a ruler?...

yep, it's accurate. Set your monitor size RIGHT!

its bigger! GET IT RIGHT! well not 9.7" but its bigger than this! hello this is bob :)

Accurate.