[WIDELY USE] ---With total scale length of 10cm/5.5inch, the right angle ruler is perfect for woodworking and carpentry, including assembling boxes, drawers, cabinets, frames, furniture cabinets, etc, also suitable for various of 90 degree DIY work of wood, metal and welding [MULTI FUNCTION] ---90 degree square designed ruler is great for measuring the square item size and contribute to the process of them, with clear metric unit accurate to millimeter for convenient use [EASY TO USE] ---Simply place the ruler on the edge of square item and align each side of them, then fix the ruler and item with the attached clips, easy to operate [PREMIUM MATERIAL] ---Made of superior aluminum alloy material, with anodized oxidation process, durable, rustproof and anti-corrosion, with long service life [RULER SET] ---Each set contains a right angle ruler and 2 fixed clips, a practical set of woodworking measurement Specification color: black 1.Product name: Right angle ruler 2.Material: Aluminum alloy 3.Size: 10*2*1cm/3.93*0.79*0.39 inch(L*W*H) 4.Weight: 300g/10.58oz Package included 1*ruler 2*fixed clip