I am not trying to stir the pot either, but it is worth noting that whatever the measurement is, It is indeed off. I did find it worth mentioning and if I still had the proof (I dumped all my old catalogs a few years ago), I certianly would scan it in. But none the less, it is an intersting topic indeed. And I am sure it actually covers more than just one manufacture.

Like I said before, nowadays researching before buying is always best.