Quote Originally Posted by fo55ilboy View Post
Jeff, from the centre of the lens axis to the film plane is 91.5mm or 3 9/16 inches. I thought I'd post this publicly so if anyone disagrees they can post their measurements and we can find a common consensus.
Ok and this was on a #1 panoram?... I had eyeballed it at a bit less than that maybe 3 3/8 at one point, but I don't have one to measure right now. I have to turn a new one on my lathe and can only handle a 7 inch diameter---doh... so I think the one I am fixing might end up being a one of a kind LOL. I may have to bring in the film plane a bit.