Its measured in inches
I have a 37" MITSUBISHI XC3725 monitor it does 1280 x 1024 at 120 hz I use it for DVD Divx and have a tv card on which I run Descaler to deinterlace and clean up CTV.
Its a few years old but works great.
I saw a video wall that was made up of 9 32" monitors on Ebay that would be cool but trying to adj. so all 9 matched would not have been, It went cheap but I think shiping would have been a killer