In post #19 I stated that the diagonal of the image area is 437mm. In post #20 it is stated that the diagonal is 452mm. The actual usable image is always smaller than the format stated size due to the film being 1/32 or there about shorter than the format size so that it will fit into the film holder, the film holder having a lip that the film fits under which hold it in place and reduces the image area.
this is a copy of the specifications I refereed to in post #19, they are the ANSI standard. get a copy at
http://home.earthlink.net/~eahoo/page8/filmhold.html
Now for the math. 1 inch = 25.4 millimeters. A² + B² = C²
Format Size
11² +14² = C²
121 + 196 = 317
√317 = 17.804493814764855594546558781474 inch * 25.4 = 452.23414289502733210148259304945 truncated to 452mm the value stated in post #20.
Image Size from ANSI standards
10.188² + 14.086² = C²
103.795344 + 198.415396 = 302.21074
√302.21074 = 17.384209501728860607582157848464 *25.4 = 441.558921343913059432586809351 mm
In post #19 I dropped the digits to the right of the decimal point, my mistake.
Any lens that produces an image circle of 442mm will just cover with no movements, a lens with an image circle of 452mm will cover with a little room for movements.