1、MULTIPURPOSE: The 90° woodworking tool ruler is used to check and locate corners where boards are joined and glued. Ideal for wood, metal right angles and 90° welding etc. 2、ALUMINUM ALLOY MATERIAL: Woodworking 90° right angle square is made of aluminum alloy, exquisite craftsmanship and high hardness, hard to deform. 3、CORROSION RESISTANT AND PRACTICAL: Our woodworking 90° right angle square is corrosion resistant, rust proof and durable, it is a practical tool. 4、SMALL SIZE: Woodworking 90° right angle square is small in size and easy to use. This woodworking angle ruler doesn't take up much space, doesn't block view and helps to draw a straight line within 90°. 5、LIGHT WEIGHT: Woodworking right angle ruler is excellent for woodworking tools, overall light weight, very easy to carry and store.