For as small as this is
I think it would be hard to get the double digit in there and keep it visable.
Besides like you said great for the newbie and great for a reference point.

At least you can put it back to where it was with out the guess and counting.

I knw you have to get it pretty close to being tuned and then set the dial to zero with the set screw on the side. Now you have a starting point to go back to.

Plus it looks kewl on the carb