Hexagonal : This stair gauge is designed with a hexagonal that fits the boundary a circle, and it's taller so that the ruler is perpendicular to the material, making your marks more precise Aluminum Material: Made of aluminum material, the is anodized, the structure is stable, strong and , not easy to break or deform Multifunctional: The clamping table saw tool is fixed, and it is used as a backer. When the bottom distance is too short, the two heads are interchangeable and clamped upside down. Use 2 clamps, it is possible to stand and inspect vertically Compact Design: Our stair gauge is compact in size, making them easy to store and carry anywhere without taking up too much space in your bag Wide Application: Triangular ruler angle marking, can be to clamp and fix the desired angle, and draw lines with a pen. The rectangular ruler is used as a stair gauge, fixed with 2 clamps, and is drawn with a pen. The ruler draws at a fixed distance, and the desired length can be to clamp and fix, and is drawn with a pen Color: Black Material: Metal Package Contents: 1 set x Framing Jig Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.