4 ms·
It (A4) has tolerances of 2mm on either side though so you can go as close to a √2 ratio as you want :) Not sure about the tolerances on letter paper.
by tsbinz 7y ago
It (A4) has tolerances of 2mm on either side though so you can go as close to a √2 ratio as you want :) Not sure about the tolerances on letter paper.
- jsjohnst 7y agoThe fact is has loose tolerances seems a bit non-sequitur, but thanks for sharing. In both cases, I was using the “standard” dimensions.
- sjwright 7y agoLoose is relative. I suspect a 2mm tolerance in office paper wasn't considered loose in 1921.
- jsjohnst 7y agoIs there a point you are trying to make? A4 is by definition the size I stated in my comment. The square root of 2 isn’t some universal “perfect size” around the globe for paper. Those who use A* might prefer it, but there is a lot of variation across the globe on what defines “paper” size as “normal”. There’s also folks who use the B* series of sizes for example.
- Dylan16807 7y agoThe definition of A4 includes the tolerances. And the only reason it doesn't perfectly match the square root of two is rounding. It's not a non-sequitur to point out that 1/√2 is at the core of A4, not the particular millimeters you quoted. Neither tsbinz nor sjwright was saying anything about whether 1/√2 is a "perfect size" or not. The B* series is also 1/√2.