Unparalleled precision: Our latest precision scale can 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 to 70 and fixed every 5 (+22-1 / 2 and 67-1 / 2), in order to you with an accurate reference angle and length respectively. Woodworking edge rule: The secret of T-shaped ruler is a series of precision-machined index holes and -loaded tolerance indexing pins mesh with them. The pin snaps into place, giving you confidence it is positioned accurately. Both edges of the blade are laser-engraved with an inch scale of 1/32 inch. Increment. The 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 perfect layout tool for woodworking: even if you 't use angles, this is also a layout tool. Almost all projects can be completed. The saw blade has the special teeth. Design line notches were found in our new stainless steel precision woodworking grid. There is a notch every sixteen inches on the entire blade. Just place the pencil in the notch and the head along the edge of the stock to get a perfect parallel line. Measuring range: 0-70 degrees Type: Angle ruler Colour: Silver+Red Material: metal Size: 20Inch Package Contents: 1 x Woodworkers Edge Rule Only the above package content, other products are not included. Note: Light 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.