Appreciate it, guys. Started poking around the internet for dial indicators and bases used to adjust jointer knifes. Not saying it isn't so, but I found nothing that looks anything like this base I'm inquiring about. This one is also non-magnetized, where everything else looks to be magnetic. So I'm still a bit on the fence with this, not wanting to jump to conclusions just because it sounds plausible. I know everyone's saying that the dial indicator is the way to go for adjusting these blades, and I get that, and once it got mentioned, it just seemed to roll from there. But from what I can find, it doesn't appear as if THIS particular base is for that--at least, there's no other example of a base like this anywhere online associated with adjusting such blades. I'd sure like to find an example of this kind of base somewhere.