Hi guys, today I'm devoting this video to the Hackman gauge. At all you might have seen before and some of my videos, it's a tool that measures the fineness of the ground or the grind of the pigments. It also measures how well they are dispersed into the binder. So I'm mulling as you right here a genuine mineral pigment which is quite coarse to start with. This needs some measuring. This is my first and as you can see it stops around 50 here. I want it just a bit further to 40, 30 maybe to be able to be well dispersed into the binder and give off that beautiful deep serulean colour. So I'm testing it again, I'm mulled it again just with some extra water to have some bit control over the fineness of it and that's better. So obviously always testing it on paper to see if it gives that right colour and this is that beautiful deep sky blue serulean hue that I was talking about. So I hope you liked the video and this is the Hackman gauge. You can find them online. They are quite expensive going from 200 for very cheap ones to two or 20,000 euros for very expensive ones. Hope you liked the video and I'll see you next time.