Features:1. Multifunctional folding triangular woodworking board, can draw 90 angle, balance line, vertical line and draw equal center point and adjustable positioning knob corresponding to the drawn line and the edges of all intersection points are equal.2. Steel material, wear-resistant and anti-corrosion, clear scale, easy positioning angle, wide range of applications.3. It can be adjusted to the required angle during use, tighten the nut for positioning, and press the center adjustable rod to achieve precise positioning. Specification:Material:SteelSize: As Shown Package:1pc * linear ruler. Note: Please allow 1-2cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!