Paint mix ratio question

BobW said
Nason Full-Thane lists the ratio as 8:1:2
My mix cups have 8:1:1
Using the '5' scale the distance between the 1:1 is 3/8".
Will adding 3/8" mark to the last column give me an 8:1:2 ratio?

View attachment 1715764917

Should be good. But, don't over think it. The reducer ratio does not need to be exact. Not like the paint:activator ratio.