[USMA:27235] Re: Angles quads and milliquads

[Joseph B. Reid]

Marcus in USMA 27233 gave an extensive argument in favor of the grade.  
He is over 2 centuries too late.  In 1793 as part of the original 
design of the metric system a new set of time units was introduced.  
There were 10 new hours in a day, 100 new minutes in the new hour, and 
100 new seconds in the new minute.  Clocks were built showed the new 
time, and some may be seen today in French museums. The attempt to 
introduce the new time was abandoned in 1795 because the rest of the 
world, as well as the people of France, did not accept the new time.

In 1795 the metric system included only the metre and the kilogram and 
their derivatives: the square and cubic kilograms, and surface and 
volume densities.  Units involving time, and electrical and photometric 
units were added later.  The results were:
	the centimtre-gram-second system of 1832 due to the British 
Association for the Advancement of Science,
	the metre-tonne-seopnd system which was legal in France from 1919 
until 1961.
	the metre-kilogram-second system,
	the metre-kilogram(force)-second system (with the slug as unit of 
mass).  This system was used by engineers.
	the metre-kilogram-second-ampere system proposed by Giovanni Giorgi in 
1901.  This was renamed in 1960 as the International System of Units 
(SI).

The degree, minute and second of angle are described in the metric 
bible as "non-SI units accepted for use with the International System", 
but a footnote adds "ISO 31 recommends that the degree be divided 
decimally rather than using the minute and second".

The grade, grad, gon, and quad are not mentioned in the metric  bible.