1Scale Standard: L square ruler has laser scale on the surfaces, the scale is standard, the reading is clear and easy to observe. 2Multifunction: Right angle ruler, level base, short ruler can be combined or used separately, rich in functions, convenient for your use. 3Carbon Steel Material: Right angle ruler is made of carbon steel material, strong and durable, not easy to change color or rust, repeated use is not easy to damage. 4Glossy Surfaces: Multifunction L square ruler has a glossy and burr free surfaces that will not damage your hand. 5Scope of Application: A variety of ways to draw lines, drawing straight lines, drawing parallel lines, drawing circles, drawing angles, finding the center line, measuring depth and other uses, suitable for different scenes. Item Type: 12in L Square Ruler Material: Carbon Steel Size: Approx. 202 x 305mm or 8.0 x 12in Thickness: Approx. 1.8mm or 0.07in Base Thickness: Approx. 18mm or 0.7in 1 x Right Angle Ruler 1 x Level Base 1 x Short Straightedge 1 x Slider