That’s really funny comment about reading first, then ask questions....after re-reading the Ansel Adam’s series of books, at least this question came...
I’ve never really understood the point of bubble levels on photo equipment. You can spend all the money you want on the most precise level, and spend...
Find me a torpedo level that is actually level. Yes, I have a couple of them, truly precision machined. But you can't walk into Cheapo Depot and find...
The bullseye levels I see on camera store and studio shop leveling devices are a joke. Do y'all know how expensive a true machinist grade one is, or...
I kind of feel like OP would benefit from something like the Stroebel book, which is quite comprehensive, covers all of the topics he has asked about...