First of all, the previous review claims that it doesn't work and doesn't land on zero on the dial. There are 4 set screws to calibrate the runout of the probe. There are 4 others that calibrate the dial to zero! It's pretty easy not to give a star because you can't figure it out. It's insanely accurate. This brand is known for precise German quality. There's so much this probe can do, if you can figure out how to use it, there's tons of it. You can pretty much use it to publish your work! This first reviewer has also just been informed. Hopefully by now they've figured out how to set up the dial.