Item Type: T Square Ruler_x000D_ Product Material: Aluminum alloy_x000D_ Surface Treatment: Anodic oxidation_x000D_ Accuracy: 1mm_x000D_ Use Scenario: Carpenter and DIY woodworker 1Aluminum Alloy: The T type scriber ruler is made of aluminum alloy, which has good hardness and wear resistance. 2Smooth Exterior: The scriber is CNC finished, the surface is glossy and burr free, and it is not easy to rust and deform. 3With Removable Backplane: The back plate of the scriber ruler is detachable and equipped with installation tools such as wrench and screws. 4Standard Size: With standard scale and screw holes, the accuracy is 1mm, and the drawing is more precise. 5For Layout and Measurement: The T square ruler is often used in carpentry or artistic drawing to lay out and measure edges.1 x TSquareRuler 1 x Right Angle Handle 4 x Screws 1 x Hex Wrench