Forcing a graphic/photograph to display at an exact size.
My professor son, who is fairly clued up about computers, was wondering if it is possible to put a picture on any subject's monitor- no matter its size - and have the picture forced to be the correct size in the real world.
i.e. a twelve inch ruler would be twelve inches long on any screen.
We all feel it's impossible, but if there were some app or method, it would help carry out the research project considerably.
LR