John wrote: >Would it be legal on the package of paper if it said 216.x280 mm? >Are 8.5x11 sheets of paper exactly 8.5x11 inches?
US letter paper is defined by ANSI X3.151-1987. I do not know if the standard uses inches or mm. It would be interesting to find out. It could be similar to the 3.5 inch floppy that is defined as 90 mm in the standard. The ISO tolerance for A4 paper is +/- 2 mm. A german national standard requires a tolerance of +/- 1.5 mm. So converting inches to integer millimetres seems sensible. But laws are not always sensible. Information source: http://www.cl.cam.ac.uk/~mgk25/iso-paper.html
