This is a paint tint machine. Well maybe not a machine, but it is used to tint paint. As many of y'all know I'm a paint contractor by trade. I've grown up watching people make countless gallons of paint with this set up. About 60% of the paint that we buy is a custom match to the old existing paint or something they want matched (bedsheets, pillows, curtains, etc.) It's not an easy thing to use this rig to match a paint color, but I always have loved watching the masters at their work. These are getting harder and harder to find in actual use. Just about everyone uses the fully automated rigs now a days, so when you do see your paint being mixed up this way know that there is a lot of experience, care, and love going into your paint.