Rim width ?

Hi Guys
Dumb wheel question of the day.
I have been rounding up parts for my 66 Dart GT project. I have two Cragar St classics. I cant find the width marked on them anywhere. Heres my ?. When measureing the width, is it measured from the out side of the rim, to the other outside of the rim,?? Or is it measured from the inside of the rim to the other inside,?. one way I get (outside) 14x7, and the other (inside) I get 14x6. So what is it,??.

Thanks
barracudadave67 aka Dave C.