Oops - my error But for some inexplicable reason the British Department for Transport use single and double apostrophes to represent feet and inches on road signs.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pierre Abbat Sent: 31 January 2009 11:50 To: U.S. Metric Association Subject: [USMA:42685] Re: REALLY using the SI On Saturday 31 January 2009 03:56:26 Martin Vlietstra wrote: > The single apostrophe is the symbol for seconds of arc. No, the single prime means arc minutes. The double prime means arc seconds. Pierre
