Rick, thanks but I am sure if I conacted the vendor, I could ask them if I fits Paterson tanks rather than asking for the dimensions, and yes Bill, you're right... You get what you pay for, but by that addage I should then be asking if Jobo reels would fit into a Paterson tank...
So, moral of the story is YES I agree they might not be as good as a Paterson reel BUT if it can do the double roll of 120 ( easily without any tape ) like the Jobo reels, then I just might be willing to try them out.
By the way, one of my Paterson reels has a small problem with the piece of plastic that holds the ball bearing in place. basically it has fallen off. Can I use superglue or an epoxy resin to stick back the little cover???