Review on HHIP 4200 0241 Piece Thread Measuring: Accurate and Reliable Thread Measurement Solution by Dylan Deng

Most of my threads were off by about 0.0005. Not a big deal for me and my limited turning skills combined with my imported lathe soooo that's it. The suitcase that contains them sucks. The outer edges of the case have come loose and are no longer holding some of the wires. I had to record some of them. For only $12 I really can't complain haha. If you need micron-level precision, you're a pro and you have an ultra-precision lathe. You can spend about $100 on a precision kit.