Hi Pierre, The tog is not a unit of measure that has been accepted by the BIPM.
I disagree with you regarding the hectare - I would actually like to see the are being brought into general use as that would make: 1 are = 10^2 m^2 1 ha = 10^4 m^2 1 km^2 = 10^6 m^2 This would ensure that no unit need have four digits ahead of the decimal point. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pierre Abbat Sent: 15 June 2011 15:27 To: U.S. Metric Association Subject: [USMA:50648] RE: cm vs. mm On Tuesday 14 June 2011 17:59:07 Pat Naughtin wrote: > The use of centimetres carries this sort of baggage. But, it also carries > other impediments to acceptance. I will mull on this thought with a view to > writing about why centimetres don't work for a metrication upgrade as I > really don't know an answer to this question. Leave this one with me for > further consideration. On Tuesday 14 June 2011 19:48:26 Pat Naughtin wrote: > My approach now is to let the prefixes do the work and only use whole > numbers - then there are no fractions at all, neither decimal nor vulgar; > see http://www.metricationmatters.com/docs/WholeNumberRule.pdf It is impossible to make the prefixes do the work when using centimeters. A gram millimeter per square second is a micronewton. A gram centimeter per square second is - there is no prefix for 10^-5. For this reason, I also think that the hectare and the tog should be abandoned. Pierre -- Don't buy a French car in Holland. It may be a citroen.
