Features: Ruler thickness 1.5mm approximately, much strong than others(0.8mm typically). Woodworking ruler is a multifunctional device for length measurement and Angles drawing.this tool for every woodworkers and mechanics. The protractor can be adjustable from 0 degree to 70 degrees and firmly locked every 5 degrees. Loosen the nut first , adjust it to a suitable Angles , and then tighten the nut to fix it at this Angles. Each woodworking ruler is equipped with a wall-mounted storage rack, which make it easy to store. Specifications: Material:Stainless Steel Type:8inch,12inch(Movable)12inch(can not Movable),18inch(Movable)18inch(can not Movable) Package Includes: 1x Woodworker Edges Ruler note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.