rulers

What text editors support vertical rulers?

I'm looking for a feature somewhat like the vertical red 80 columns marker in NetBeans but one that's easier to use. I'd like it to function more like the tabs in MS Word except that the horizontal line is displayed on the entire file. I looked on the Comparison of Text Editors over at Wikipedia and I didn't find that "vertical ruler" ...

how can i develop scale like measure it add on in firefox

i want measuring tool in project that will be same as measure it in firefox(add-on) how to do this. ...