Technical Looking for a thread regarding valve train and push rod length

Was 3-5 months back. In the thread someone posted a video of a fellow who put a line on the rocker arm (roller) then calculated valve lift, then adjusted the rocker nut to 1/2 the lift. I think he then adjust the push rod checker so the line was 90 degrees to the stud.
Sound familiar? I thought I saved it, but can’t find it.
I wanted to send it over to a friend who is starting a new engine build.
It sure seemed simpler and more precise than marking the valve tip, as he’s never done it before and I figured it would simplify it for him.
I also recall him marking the adjust nut, and how much to rotate it based on 7/16 or 3/8 studs and TPI

Thanks

 

https://www.jalopyjournal.com/forum/threads/rolle-rocker-question.1226513/

 

You da man!

Thanks!