Features [Scope of application] The simple sliding rule of the woodworking scriber applies to the overlapping marks on the left and right sides of the rule. [Main purpose] The measuring tool can be used to determine the precise position of the center of the board during cutting, pin joints and assembly. [Good stability] The central positioner with a magnetic bottom of the scribing ruler can be connected to the extension table on the iron surface. The aluminum alloy is thick and has good stability. [Easy to measure] The calibration is clear and easy to read, and there is no need to change the main body during the measurement. [Multi-purposes] T-shaped writing, 45-degree angle, square multi-function carpentry, multi-function marker, aluminum alloy thick guide rail. Specification: Condition: 100% brand new Item Type: Woodworking ruler Material: Aluminum alloy Color: Black Measurement Accuracy: 0.1mm Package List: 1 x ES-4 Black Woodworking Ruler Package List