Jaques my source is an original copy of the Australian standard
More on Munsel
It is a system used "back in the day" according to my paint technologist.
It works on the idea of a sphere containing all the coloure . Imagine holding a circle in fromt of you blue on one side red on the other greenat the botom and orange at the top . coming out of the page is lighter and going into the page is darker.
Munsdel takes slices of the sphere and produces a sample of each colour on the slice.
Clearly there is an infinity of colours so Munsel goes in incremental steps. To have a realy fine series of colours to compare with they produced an incredibly thick book which was likewise incredibly expensive.
There was a kind of cheap way of using it . That was to purchase a very broad set of basic colours and work out which "page" your colour was on and purchase that page.
This was pre spectro technology.
I think the AWM have put those colours up because they spent a swag on the Munsel system and want to keep using it. The Spectro gives the colour to an accuracy of several decimal places. Muncel is kind of whole intergers.
