These are rings with picot. I've been trying to keep the picot the same size & am improving. I am not sure this gauge is much help. (size 10 fiber left, size 3 fiber right)
Decided to give a size 20 a try. A challenge --- see the knot in the center? LOL These are Lizbeth threads, size 20 --- pretty colors!
Will keep practicing & hope to improve : )