If youÕre looking to get a new flat screen HD television, youÕll need to measure diagonally to figure out the screen size. If youÕre trying to get a screen that is the same size as your old ÒtraditionalÓ television, the diagonal measure will have to be 6% larger than the measure on your old television. For more details on why see: http://www.screenmath.com/
. The math is quite complex, but these are the rules of screen measurement.