I'm always looking for shortcut and accuracy increasing abilities for setting my tool height on my lathe. I am very familiar with Edge products and respect their high quality, in combination with their overall functions. I have other tooling that they make and am very pleased with the end accuracy result when using for set ups. However the reason for only 4 stars on this particular item it that it will not set tools at all angles or in certain other positions of tool post location. If you have to move the tool around to set it, this tool is of no importance to me a a standard go to. I made a tool that is magnetic and attaches to the lathe ways for setting in nearly any position, or use the old center in chuck point method more than this tool. I am not unappreciative of this tool, for it has other uses also; but wish it was more compact in size and would reach tooling at more setting locations. The tool is clubby and overdone for mini lathe in my opinion and more useful for intermediate to full size lathes.