This week's tool tip is about an esoteric machining tool that Adam has used a few times lately in his machining projects. It's a "wiggler" center finder, used on his lathe and milling machine to perfectly line up the tool with the center of a piece of round stock. Adam used it recently to calibrate his lathe tailstock, and it's one of those tools where learning its name was a revelation for Adam's journey as a machinist!