I recently got a set of gorgeous wheels with Tipo HF hubs and NISI tubular rims. There is no indicator at all of sizing. I measured them and they actually seen a hair larger than the 27" wheels on my Paramounts. They came off a Raleigh, so the person who sold them tells me. I believe I have heard that all tubular are 28", but I have also heard that they are all 27". I never gave it much though before, they are spaced at 120 so this gives an indication of the era. Could these be 28" rims? Measuring seems a bit iffy because of the different height of rim walls, does one measure to the inside edge of the rim? If so to the outboard edge? Some are concave, of course which seems to muddy the water even more.
Sounds pretty basic, but I don't think I've ever encountered such a thing before. I'm also thinking that Raleighs of that period used inches, but the rest of Europe was using 700c by then, right?
Lansing, MI USA