Woodworking protractor , woodworking marking tool , High Layout Measuring Tool for Carpenter Aluminum alloy L-shaped splint , strong & , light & high strength There is no need to reverse the body when measuring , just slide to the right and left 45 / 90 degree angle The square protractor helps you draws perfect horizontal lines while sliding the rule along the edge of your work Anodic aluminum oxide treatment , which not only ensures a beautiful appearance but also has certain oxidation resistance, Manufacturer: Watreketal