6sigma2@polari.UUCP (Brian Matthews) (02/19/91)
I'm looking for the "official" size for A4 paper. I've looked in three different places so far, and have three different answers. Sigh. It appears to be around 21cm x 29.7cm, but I'd like the true size, if it is, in fact, standardized. Thanks for your help. -- Brian L. Matthews 6sigma2@polari.UUCP
eijkhout@s41.csrd.uiuc.edu (Victor Eijkhout) (02/20/91)
6sigma2@polari.UUCP (Brian Matthews) writes: >I'm looking for the "official" size for A4 paper. I've looked in >three different places so far, and have three different answers. Sigh. >It appears to be around 21cm x 29.7cm, but I'd like the true size, >if it is, in fact, standardized. The figure you give is correct. Paper sizes in the A,B,C, and D series are DIN norms (you can track them through the British or American -- I can't see where you're from -- bureau of standards), and as far as I know: A0 has a surface of 1m^2 with a 2^.5 ratio between the sides, meaning halfing a sheet Ai gives Ai+1 of the same shape. B0 has sides 1m x 2^.5m C, D: I don't know. Victor.
jlister@slhisc.uucp (John Lister) (02/21/91)
In article <3390@polari.UUCP> 6sigma2@polari.UUCP (Brian Matthews) writes: >I'm looking for the "official" size for A4 paper. I've looked in >three different places so far, and have three different answers. Sigh. >It appears to be around 21cm x 29.7cm, but I'd like the true size, >if it is, in fact, standardized. > >Thanks for your help. >-- >Brian L. Matthews 6sigma2@polari.UUCP A0 is one square meter, divided in such a ratio so that when you fold it in half, the shape of the paper is the same. If you can remember some algebra, this works out to be that the ratio is one to square root of 2. Thus, the sizes of the various sheets are (worked out to the nearest millimeter): A0 841 * 1189 mm A1 595 * 841 mm A2 420 * 595 mm A3 297 * 420 mm A4 210 * 297 mm You can work the sizes out exactly, but my experience in the paper business is that the rotary cutters which are used to produce bond paper are only accurate to 1/2mm anyway. John Lister.