Nikor made film-developing tanks with inside diameters of roughly 3-3/8" and 4-3/8". The skinny ones are common, the fat ones (intended for 220 film and also for the really slick 12-sheet 4x5 reel) are not. I've just come upon a single-reel Q25 tank (the fat one that holds a single 220 reel) and would like to find a wide 35mm reel or two to use with it. I know these were made and have seen a couple on eBay over the years. Does anyone have such a reel sitting unused and unloved amidst their old darkroom equipment? The diameter of the reel would be about 4-1/4”.
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