Joe Reid wrote: "A popular size of note paper is ISO size A4, 210 mm by 297 mm. Since the universal fanfold computer printer paper spaces its sprocket holes at 1/2 inch intervals, it is usual to print on continuous paper with 12 inches vertically between folds."
Most continuous form computer paper is 11 inches vertically between folds. I just took a look at a printout I have from 1964 -- 11" high x 15" wide. 12" paper is very much the exception. For continuous-form legal documents, a 14" vertical dimension is common. Obviously, any integral multiple of 0.5" will work. However, for the narrower formats especially, the ability to fit into a standard binder is very important. Non-integral multiples of 0.5" will also work, as long as they are multiples of 1/12" and as long as small multiples of individual pages have an aggregate length that is a multiple of 0.5" (the sprocket strip is usually removed after printing). 3-2/3" is not an unusual vertical dimension for continuous form sprocket-feed labels. There are three per nominal 11" page, with no horizontal waste strips. I forget the exact vertical dimension of the replenishment notice forms we used to print on the 650-407 printer at Air Canada between 1959 and 1962, but I believe it was something like 5.5" or 6". Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator]
