ALL writers' style manuals need to be changed so that official SI symbols 
rather than abbreviations are used in ALL writing - newspapers, periodicals, 
magazines, etc.   Most scientific publications now use  SI symbols only.    
This will avoid confusion and avoid the need to learn two different shorts for 
the same unit,  e.g. km/h and kph.  It's nonsense to do otherwise.
    As for pressure,  weather has been metric at least from the early 1900s 
only it was based on the bar.  The World Meteorological Organization and its 
member countries, including the United States, now use the hectopascal rather 
than the millibar since the numbers are identical.  This was to  simplify and 
accommodate the change to the SI.  That's why it was decided to use the hPa  so 
 historical and archived data and publications  would not need changing or 
accommodation because of a decimal point shift to go from hPa to kPa.
Regards,  Stan Doore

  ----- Original Message ----- 
  From: [EMAIL PROTECTED] 
  To: U.S. Metric Association 
  Sent: Saturday, November 03, 2007 12:32 PM
  Subject: [USMA:39671] Re: Speedometer displays


  I guess I'm wondering more what the current practice is now, and secondarily 
what the law allows (i.e, are the choices km/h only or both km/h and mph 
provided that the km/h display is primary on dual analog displays, etc;)_

  Ezra

    -------------- Original message -------------- 
    From: [EMAIL PROTECTED] 

    > No..there are plenty. Example, the Peugeot 405 Mi16 sold in Canada in 
    > 89-91 had km/h only. But a contemporary (90-97) Mazda Miata had km/h 
    > on the outer and mph on the inner. 
    > 
    > Quoting [EMAIL PROTECTED]: 
    > 
    > > So, is it illegal to sell a car in Canada that displays km/h only? 
    > > Ezra 
    > > 
    > > -------------- Original message -------------- 
    > > From: Stephen Gallagher 
    > > 
    > >> >> 
    > >> > All new cars (since 2005) display km/h *only* on the speedometer and 
    > >> > km *only* on the odometer, unless the particular make has a digital 
    > >> > display that is switchable - my wife's Citroen can be switched from 
    > &g! t;> > one to the other, but like anyone else I know with such a 
model, she 
    > >> > keeps it to match the signs. Cars older than that display km/h and 
    > >> > MPH on the speedometer, with the MPH display on the more prominent 
    > >> > outer dial, and miles *only* on the odometer. 
    > >> > 
    > >> > What is the position in Canada with respect to instrumentation ? 
    > >> 
    > >> Virtually all cars sold in Canada have speedometers with km/h as the 
    > >> larger and more predominant numbers, and MPH as the smaller inside 
    > >> numbers. The odometers generally display km. And, some newer cars 
    > >> can switch back and forth between km and miles, but that is primarily 
    > >> for use when driving the US, as well as to allow auto manufacturers to 
    > >> only have to produce one speedometer and odometer display for both 
    > >> c! ountrie s. 
    > >> 
    > 
    > 

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