Unparalleled precision: Our latest precision scale can provide unparalleled precision for your panel layout work. press the head to the desired angle, and then press the straight line.The head can be adjusted from 0 to 70 and fixed every 5 (+22-1 / 2 and 67-1 / 2), in order to provide you with an accurate reference angle and length respectively. edge rule: The secret of TTKJ T-shaped ruler is a series of precision-machined index holes and -loadedClose tolerance indexing pins that mesh with them. The pin snaps into place, giving you confidence that it is positioned accurately.Both edges of the blade are laser-engraved with an inch scale of 1/32 inch. Increment.The total cumulative error of the scale over the blade length is .004inch.The thin satin-finished stainless steel blade is easy to read and minimizes parallax errors.The layout tool for woodworking: even if you don't use angles, this is also a layout tool.Almost all projects can be completed. The saw blade has the same special teeth. line notches were found in our new stainless steel precision woodworking grid.There is a notch every sixteen inches on the entire blade. place the pencil in the notch and slide the head along the edge of the stock to get a parallel line.Measuring range: 0-70 degreesType: ruler ur: Silver+RedMaterial: metalSize: 20InchPackage Contents:1 x workers Rule the above package content, products are not included.Note: shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.