I was very apprehensive about buying a cheap set of squares but couldn't afford a well known quality brand. I figured it was Grizzly, a well known American organization, and that their product rating/supplier quality rating would be pretty high. I was wrong. The photographs show that they are not square, not even to each other. Also don't block square. What you don't see are the edges. The edges of two squares are not smooth, like they were pressed in too hard, or the scissors weren't sharp and cut off the edges. I wanted to use them for light gunsmithing and other mechanical and instrumental tunings. I'm waiting for a response to my return request.
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