- Joined
- Jul 2, 2014
- Messages
- 7,594
Well, I have the AA calibration surface plate, the granite square, a cylinder square, a surface grinder set up as close as I can get it so far, and tenths indicators, among other things. If my squares are not correct, I can fix them, as needed. Of course my shop is not temperature controlled and not everything is calibrated currently to a traceable standard, but I can work pretty close if I want or need to. When I get in over my head and start chasing things I cannot quantify with assurance, then it becomes obvious that I just have to call it good enough. Still, that is pretty damn close, and tested multiple ways to make me more confident. That method makes me feel much better than taking the manufacturer's accuracy claims as gospel. A lot of those claims are wishful thinking or intentionally misleading... And, of course, a lot of my work is to very wide tolerances, so it mostly works out. But I am paying attention, and not just a true believer.