The Cutting Edge frosted ruler with its full see-through non skid frosting keeps the ruler from sliding and makes it light enough to see your fabric through it. The unique red grid system to highlight the 1/2'' marking, using both lines to square up blocks or to cut squares effortlessly. This item is ideal for all your sewing needs.
I purchased this on a whim and have found it to be the most used ruler in my tool arsenal. I use the sharpening side every so many cuts so I don't over do it. This has already saved me the cost of 6 blades. Now I need to purchase a square size.
It does sharpen dull blades. I love this aspect. However, I do not like the fact that the plastic is frosted. Makes lining up the fabric underneath more time consuming. Otherwise, very helpful in keeping my blades sharp.