Agreed as a unit it should not have an 's'. In the UK we usually :- say "thou", and write "th", for a milliinch, and=20 say "mil", and write "mm" for a millimetre. Best Regards, Simon Aglionby Senior Design Engineer, Pro-Bel Ltd, READING, UK -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Padilla (cpad) Sent: 04 June 2007 19:35 To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Mil or Mils? Off-topic to the "matching within 1 mil" stuff, I think I see a lot of misuse of the unit "mil" when it is written down. As I understand it, the unit is abbreviated: mil So when writing it down, it should be like: "..we match within 100 mil but the CAD guys says 10 mil is just fine..." When you read it, you will say it with an 's' on the end but if it is used as a unit, it shouldn't be made plural. Pro-Bel Limited - Registered in England - No. 3487653. Registered Office: Hartman House, Danehill, Lower Earley, Reading, Berks, R= G6 4PB The information in this e-mail is confidential and is intended solely for t= he addressee(s). We apologise if you have received this e-mail in error. If= you are not the intended recipient, please notify the originator immediate= ly and delete the message from your computer without using, copying, alteri= ng or disclosing its contents. Internet communications are not secure and t= he company does not accept legal responsibility for the contents of this me= ssage. Any views or opinions presented are solely those of the author and d= o not necessarily represent those of the company. Thank you for your co-ope= ration. This message has been scanned for malware by SurfControl plc. Please consider the environment before printing this email.=20=20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu