I just picked up a clean set of front & rear cells for a Bausch & Lomb Tessar IIb #11 for my still in progress 16x20 build
and I need to fabricate a barrel. Spacing by trial and error is probably my only option but I would sure prefer some measurements so I figured I would try throwing it out to the community first.
Any B&L 16x20 IIb Tessars out there?