Sharpening can be a messy business. Whether you use water stones or oil stones, there’s a slurry of lubricant, stone debris and metal cuttings that gets everywhere. While your hands and tools are covered in this stuff, you still need an accurate, reliable way to check the edge to make sure it’s perpendicular. Here’s the perfect answer. B
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The product is great. It gives the exact angle on anythy you need to sharpen.