Features CORROSION RESISTANT MATERIAL: The 90 degree square ruler is made of excellent carbon steel with smooth surface machined by good workmanship, rust resistant, durable and corrosion resistant. ACCURATE MARKING: With an L ruler, you can draw perfect horizontal lines while sliding the ruler along the working surface. REASONABLE AND PRACTICAL: Woodworking ruler has reasonable structure, easy to use. Adopt exquisite workmanship, lightweight and practical. APPLICABLE SCENARIO: Woodworking marking ruler is often used in woodwork and is also important when you make your own furniture. Dimension can be accurately measured, the proper right angles obtained, and fitted more tightly. CONVENIENT CARRYING: Comes with a compact size and a light weight as well, the machinist square is very convenient to carry with your for outdoor working. Spec: Item Type: Machinist Square Specification: Approx. 50 x 40mm / 1.97 x 1.57in How to Use: Direct use. Package List: 1 xMachinist Square Package List 1 x Machinist Square