I don't see the need for 1/16" markings, either, but if this is something you need, then I'd suggest getting the largest one they have. With an 8-1/2" ruler, you can cut strips from 1/2" up to 8-1/2", so why bother spending the money for a narrower one.
That being said, I prefer the Creative Grids rulers because they have the non-slip spots on them.