On Sun 10 Jul 2016 at 23:22:29 (-0400), Doug wrote: > On 07/10/2016 09:20 PM, rhkra...@gmail.com wrote: > >On Sunday, July 10, 2016 08:33:37 PM David Wright wrote: > >> BTW I do find American paper weights about as obfuscated as anything. [...] > >> Yes, paper; but how much? > > > >From a quick google search: > > > ><quote> > > > >What does 20 lb paper mean? | Yahoo Answers > ><https://answers.yahoo.com/question/index?qid=20080604062331AAvp9Gk> > > > >https://answers.yahoo.com/question/index?qid... > > > >Jun 4, 2008 - Best Answer: "Paper weight refers to the weight of a > >500-sheet ream of 17" x 22" paper. Each of these sheets is > >equivalent to four letter size ... > > > ></quote> > > > I've seen several places where this definition is shown, so it must > be correct. If you Google > for paper weight, there will be at least one site that mentions > paper weight in pounds and > also in grams / cm-squared, which may make sense to the Europeans > reading this but > not to me!
gsm is grams per square metre. The numbers may be unfamiliar to people in USA/Canada (75gsm is your normal 20lb copy paper) but as for making sense, it could hardly be simpler---the weight in grams of a square meter of the actual paper concerned. Where's the sense in "Please remember that the greater the "lb" associated with a paper not always determines that it is a thicker sheet. Notice that the 67lb Vellum Bristol has a lower gsm than a 65lb cover because they are two different categories of cardstocks and are scaled differently." (paperworks.com) Cheers, David.
