Description:  300mm Angle Positioning T Square Posi Lock Ruler Woodworking Edge Ruler Angle Measure Ruler Scriber Carpentry Tool.  Every 5 Degree from 0-70° Including 22.5 and 67.5 ° Now.     Specification:  Material: All Aluminum alloy.  Size: 300mm.  Length hole distance: 1mm.  Measuring range: 0-75°.  Single hole degree: 5°.     Feature:  1. The nut design can adjust the tightness and change the angle of the ruler.  2. Just press the head to the desired angle, and then press the straight line.  3. Both edges of the blade are laser engraved.  4. The thin satin-finished aluminum alloy blade is easy to read, easy to draw parallel line and angle line.  5. Just put the pencil in the notch and slide the tip of the pen along the edge of the barrel to form a perfect parallel line.     Package Included:  1X Woodworking Edge Angle Ruler