Meatlover,
I'm not sure what type you fly, but to answer your question, I don't know of a perfectly accurate way to intercept the final at exactly 10.0nm.
The heat you're getting from most of the posters here is because your question seems a bit silly. If you wanted to know how to intercept at exactly 10nm, I suppose it's a valid question. However, if you're flying a modern jet (somewhere here it was assumed you're in an A320) and can't figure out how to join final at ~10nm, I'm afraid I'll have to agree with some here that you are far too dependent on automation.