Feature: 1. Aluminum Alloy: The T type scriber ruler is made of aluminum alloy, which has good hardness and wear resistance. 2. Smooth Exterior: The scriber is CNC finished, the surface is glossy and burr free, and it is not easy to rust and deform. 3. With Removable Backplane: The back plate of the scriber ruler is detachable and equipped with installation tools such as wrench and screws. 4. Standard Size: With standard scale and screw holes, the accuracy is 1mm, and the drawing is more precise. 5. For Layout and Measurement: The T square ruler is often used in carpentry or artistic drawing to lay out and measure edges. Specification: Item Type: T Square Ruler Product Material: Aluminum alloy Surface Treatment: Anodic oxidation Accuracy: 1mm Use Scenario: Carpenter and DIY woodworker . Package List: 1 x T Square Ruler1 x Right Angle Handle4 x Screws1 x Hex Wrench