Yellow Angle Finder Multi-Protractor
This angle finder can work in several different ways. It can find an angle by placing on the workpiece - both an acute angle or obtuse. And, it can work as a 90-degree offset on the outer left edge to measure bevels or corners.
A tool like this is essential to adapting to unknown angles, and very helpful as a general protractor, as well. It also can be used to draw shapes where exact angles are critical to the design, like polygonal tiling or interlocking pieces.
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