It would have bin useful to have a dimension scale box in the dimension menu, example shown in the pic linked below. It would make dimensioning of scaled detail views much quicker and one doesn't need to calculate every dimension for the scaled detail and type them in manually.
No, it is for drawings with views with different scaling. This is solved with view ports in Autocad, but a different and simpler way of doing it is to scale the view and scale the dimensions for that view. Just a suggestion.