THis Color Atlas is a practical working aid as well as a communications system. It shows the mixing possebilities of three - and four color printing in uniform gradations. We proceed here in a purely quantitative step to the next is always only 10%.

This gives us a reference work that shows more than 5,500 hues order, an astonishingly large number considering that expensive color atlases usually contain no more than 500 to 1000 hues at prices of up to 500$. Of course there the hues are defined with scientific precision and the high price results from the closeness of permitted tolerances(range of color deviations)