hubbard gave the name "the coffee grinder" to the mest aspect of the fourth invader force's fac one, which he termed "an outright control mechanism, invented to cut down rebel raids on invader installations". it was "originally laid down in this galaxy about one million years ago", says hubbard, and consists of "a two-handled, portable machine which, when turned, emits a heavy push-pull electronic wave in a series of stuttering 'baps'".