Why make it a card then? If it’s meant to be stored as a document then it should be the size of an envelope, or a standard A4 sheet.
I keep mine attached to the envelope sized paper it came on. But it shouldn’t be a card shape, that encourages people to carry it. My grandpa always carried his.
Don’t mention A4 paper, it scares the Americans. If any of them could read, they would be very afraid right now.
Right?
Like just because we export all our media to you (because it’s better) and make fun of our stereotypes in that media, doesn’t mean that most of us are like that. Believe it or not we actually have cool stuff that’s uniquely American.
And the reason you see Kraft singles is because we don’t want to share our BBQ with you.
It’s a size of paper with an aspect ratio of 1:√2, and the short edge that is 21cm long. The long edge will then be 21√2 = 29.7cm. The aspect ratio has the interesting property that it can be halved and doubled while remaining constant.
This has been your ISO fact of the day.