home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.std.internat
- Path: sparky!uunet!mcsun!sunic!aun.uninett.no!nuug!ifi.uio.no!enag
- From: Erik Naggum <erik@naggum.no>
- Reply-To: Erik Naggum <enag@ifi.uio.no>
- Message-ID: <19930110.007@erik.naggum.no>
- Date: 10 Jan 1993 22:46:12 +0100
- References: <1i9j4gEINN8nd@uni-erlangen.de> <1993Jan4.170125.3951@infodev.cam.ac.uk>
- Subject: Re: ISO paper sizes
- Lines: 27
-
- [Alasdair Grant]
- :
- | 1 SI inch is 2.54mm _exactly_, not just to 7 decimal places.
-
- There is no Systeme International "inch".
-
- | But the people who don't use ISO paper sizes don't use SI inches
- | either, they use NIST inches, which differ from SI inches well before
- | the 8th decimal place. (I don't know the exact details - after all,
- | why should I know about American internal standards?)
-
- "NIST" inches were aligned with the SI units well before 1982 (my earliest
- reference to 1 inch = 2.54 cm), except for the US Survey foot, which is
- ~1.000002 ft, and reflects the old inch, for very sound reasons.
-
- | I believe NIST inches are a standard unit in HyTime.
-
- The HyTime inch is 254/100 cm, or 2.54 cm, exactly. There is no other
- definition of inch in HyTime. Of course.
-
- Best regards,
- </Erik>
- --
- Erik Naggum ISO 8879 SGML +47 295 0313
- Oslo, Norway ISO 10744 HyTime
- <erik@naggum.no> ISO 9899 C Memento, terrigena
- <SGML@ifi.uio.no> ISO 10646 UCS Memento, vita brevis
-