5 ms·

> The base size A0 has an area of exactly 1 square meter. Which is still arbitrary :)

• willvarfar 12y ago
  No, its the basis of paper weights too, which are measured in grams/m^2
  • lloeki 12y ago
    Ok, that's revelation of the day! (sometimes you fail to connect the simplest things). Now I can eyeball the weight of a stack of paper :-)
  • ovulator 12y ago
    Another thing that the US fails miserably at. 80# cover, 110# index, 24# bond … it’s all meaningless.
    • function_seven 12y ago
      Those numbers aren't meaningless. They're the weight of a ream (500 sheets) of that paper at 17x22.