1. The can be adjusted from 0 to 70 and fixed every 5 times (+22-1/2 and 67-1/2) to give you an accurate reference angle and length respectively.Close tolerance indexing pins. The pin snaps into place, giving you confidence that it's in place.<br> 2. Both edges of the blade are engraved with 1/32Inch inch graduations. regular raises<br> 3. The ruler has a total cumulative error of .004Inch over the length of the blade.<br> 4. Almost any project can be done. Saw blades have the same special teeth.<br> 5. There are notches every sixteen inches throughout the blade.<br> 6. Just place the pencil in the and slide the tip along the edge of the pencil to get a perfectly parallel line.<br> Colour:As Shown<br> Material:Metal<br> Size:20 Inch<br> Package Contents:<br> 1 x Woodworking Ruler<br> Only the above package content, other products are not included.<br> Note: Light reflection 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.