![](https://secure.gravatar.com/avatar/d8110a8a8a97be0803549ea5ee2e638b.jpg?s=120&d=mm&r=g)
9 Feb
2009
9 Feb
'09
9:40 a.m.
2009/2/9 Antoine Junod
A5 paper has not the exactly the half size as A4 paper.
A4 has a height of 297mm and A5 a width of 148mm.
297 - 2 * 148 = 1mm (the gap on the left side).
God. I always thought it was exactly one half of A4. Thanks for the info.
ISO 216 paper sizes are always rounded to full millimeters. http://en.wikipedia.org/wiki/ISO_A4 Best Martin