I'm scanning some 30 year old 120 films and find that some of them are buckling slightly when placed in my Epson 4870 Scanner 120 film holders. (And some are buckling quite badly.) Modern FP4 is OK. So I've tried Googling for the standard width of 120 film, and find that this information now seems to be only available if I pay for an ISO specification! Wikipedia tells me the length, but not the standard width. It also tells me the dimensions of 120 and 620 spools, and how to re-spool 120 on to 620 spools, but not the width of the film. The old Ilford manual of Photography also seems silent on the matter of film width. Does anyone know of an authoritative Internet source for this info? Thanks.