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- From: unrza3@cd4680fs.rrze.uni-erlangen.de (Markus Kuhn)
- Newsgroups: comp.std.internat
- Subject: 1 Inch (was: ISO paper sizes)
- Date: 5 Jan 1993 11:26:52 +0100
- Organization: Regionales Rechenzentrum Erlangen
- Message-ID: <1ibnpcEINNp4v@uni-erlangen.de>
- References: <1i9j4gEINN8nd@uni-erlangen.de> <1993Jan4.170125.3951@infodev.cam.ac.uk>
- Reply-To: mskuhn@immd4.informatik.uni-erlangen.de
- NNTP-Posting-Host: cd4680fs.rrze.uni-erlangen.de
- Lines: 30
-
- ag129@cus.cam.ac.uk (Alasdair Grant) writes:
-
- >In article <1i9j4gEINN8nd@uni-erlangen.de> mskuhn@immd4.informatik.uni-erlangen.de writes:
- >>1 inch is 25.4000000 mm.
-
- >1 SI inch is 2.54mm _exactly_, not just to 7 decimal places.
- ^^ you mean centimeters (cm), don't you?
-
- Of course, you are right. My intention was to write
-
- 1 inch is 25.4000000... mm. :-)
-
- This inch is still used in metric europe for e.g. diameters of water
- pipes and most dimensions in electronics are 2.54 mm (1/10 SI inch)
- multiplied by something.
-
- >I believe NIST inches are a standard unit in HyTime.
-
- In HyTime (according to a recent CACM article) 1 inch is _exactly_
- 25.4 mm = 2.54 cm = 0.0254 m. Remember, HyTime is an ISO standard
- and ISO standards only use the SI system defined in ISO 31.
- (e.g. ISO 31-1:1978 Quantities and units of space and time)
-
- Markus
-
- --
- Markus Kuhn, Computer Science student -=-=- University of Erlangen, Germany
- Internet: mskuhn@immd4.informatik.uni-erlangen.de | X.500 entry available
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