I use a drill stop on my rod as an indicator for the proper seating depth. That rod says a charge height indicator. Is it measuring the powder charge?? Or the bullet??

The indicator also looks like it is a 2-piece indicator. Is it 2-piece?? Is it kind of like the depth adjustment you use on your case trimmer?? Where you lock down then adjust slightly with the second wheel??

What type of metal is the rod made from?? I might try one. Thanks, Tom.