I saw this article in BYO last month and thought it could be helpful and relatively simple to do on our kettles that don't have markings.
https://byo.com/stories/issue/item/3113-etch-your-kettle-projects
Fri, Sep 12, 2014 - 7:07pm
#1
Etch kettles
Go for it. I was supposed to do that but i forgot. I can help when ever.