displaying length(like a ruler) on FCKeditor toolbar

I'm a newbie.
I was wondering is there a way to display(in inches) the length of the current FCKeditor window? Just like in MS Word, there is a ruler at the top that displays the length of your page in inches. It also displays the height of the page. I couldn't find a way to do this in FCKeditor. It would be nice if this could be done.

thanks.