Features1. The new Woodworking Edge Rule simplifies your life by wrapping around the edge of the inventory and providing precise proportions on both sides. 2. The secret of the T-shaped square is a series of precision-machined indexing holes and spring-type, close-tolerance indexing pins engaged with it. The pin snaps into place, giving you confidence that it is positioned accurately. 3. Even the most skilled woodworker has to face the challenge of accurately placing the angle on a large panel project. You can try to extend the production line from a small protractor, but even a small error will make the production line extend farther, the greater the error. 4. Our latest precision ruler can provide unparalleled precision for your panel layout work. Just press the head to the desired angle, and then press the straight line. The head can be adjusted from 0 Degree to 70 Degree, and is firmly locked every 5 Degree (plus 22 -1 / 2 Degree and 67-1/2 Degree) to provide you with accurate reference angles and lengths respectively. It is 10 inches, 15 inches or 20 inches. 5. Even if you don't use angles, this is a layout tool that can be used in almost every project. The blade has the same exclusive serration function. Design nicks are found in our new product. Stainless steel precision woodworking square. There is a notch every sixteen inches on the entire blade. Just place the pencil in the notch and slide the head along the edge of the stock to get a parallel line.SpecificationMaterial: MetalColor: SilverSize: 10 inches / 15 inches / 20 inchesMeasuring range: the head can be adjusted between 0 Degree and 70 DegreePackage List1*Woodworking Edge Rule