So I have this neat old barrel lens, a 7-1/2" f/4.5 Kodak-Anastigmat No. 33. There's a fair amount of information to be found on the No. 33 lens; it's a Tessar type and seems to have been one of Kodak's staple lenses in its day, so I have reasonably high hopes for it as a user.
But I need a mounting flange. I've measured it with calipers, and it seems to be very close to a 2.5" diameter, 30 threads per inch. In other words, it looks like it might be the same as the standard 2.495x30 mounting of an Ilex No. 4 shutter. The flange for which conveniently is a stock item at SK Grimes.
Before I drop the money on a flange that may not fit, can anyone confirm or deny that this lens will mount in place of an Ilex 4?