Mark, Both BIPM and NIST accept either the . or the , as a decimal marker. That is the reason both the . and the , are deprecated as a separator of groups of three numerical digits. Instead, a space is recommended to separate groups of three.
Gene. ---- Original message ---- >Date: Wed, 28 Jan 2009 09:16:08 -0800 >From: Mark Simon <[email protected]> >Subject: [USMA:42623] Re: REALLY using the SI >To: "U.S. Metric Association" <[email protected]> > > >With regard to semantics, I would like to mention the use of the comma >as decimal separator. I am sure that most of us are aware that comma >"," is used to separate integers from the tenths in Europe as opposed >to the period "." which is used in USA. Thousands, Millions, etc. are >separated by a space as opposed to the comma. Mechtly has separated >the thousand in the European manner. > >When I purchased nuts for my honda recently it was labeled as: >M8-1.25, but the bolts I used to test the thread were labeled as: >M8-1,25. > >Does SI specify the punctuation as to the decimal and thousands separators? > >On 1/27/09, [email protected] <[email protected]> wrote: >> >> Aaron, >> >> Agreed, the ton is a unit of mass. Eventually, I hope, >> a "metric ton," defined as exactly 1 000 kilograms, will be known simply as >> a ton, identical to a tonne in some languages. >> >> I favor this use of the word "ton" ;not adoption of the Mg. >> >> Is this your first posting here? Welcome! >> >> Gene. >> >> >> >> ---- Original message ---- >>>Date: Mon, 26 Jan 2009 12:39:25 -0700 >>>From: Aaron Harper <[email protected]> >>>Subject: [USMA:42608] Re: REALLY using the SI >>>To: "U.S. Metric Association" <[email protected]> >>>Cc: "U.S. Metric Association" <[email protected]> >>> >>> I can't let this one go without making a comment. >>> >>> Ships are measured in tons (units of Mass) of water >>> displaced by the ship. Even though a given tonnage >>> ship displaces a specific volume of water, this is >>> not a volume mesurement. >>> >>> Refrigeration unit capacities are rated by the >>> amount (again units of Mass) of ice created (or >>> frozen) per unit of time. Usually, here in the USA, >>> this unit is presently given in tons. It is not a >>> measure of the energy or heat required. >>> >>> Respectfully, >>> >>> Aaron Harper >> >> >
