No. Unfortunately.
Since the OP's post is in the Writers' Forum, then I'm presuming that we're talking about 12 inches for writing purposes, as opposed to normal, regular reading habits.
For me, the question would be this:
Should I write on a computer laptop or on a 12-inch (or larger?) tablet?
I haven't had the luxury (or hell?) of writing on a tablet, but I'm immensely curious about doing so. The 'twelve-incher' could then be used secondarily as a reader; whereas, on my MacBook Pro, I prefer not to use it as a reader.
----------------------ATTITUDE BREAK----------------------
I can see going to a coffee emporium, sitting down with my cappuccino, eyeing the wondrous Fat Food there, taking one last look at fat and thin patrons*, taking out my tablet, keyboard, propping device, moving a newspaper to the side, adjusting my clothes ['man-speak'], taking a slowww sip from my drink, looking heavenward at the wondrous duct-work before getting down to writing.
^ Is that how it works?
* = Not that there's anything wrong with being fat, thin, evaporated, skinny, obese, round, or emaciated.