Material: the ruler body is made of steel and the angle frame is made of aluminum alloy, which is durable and has a long service life Kit specifications: measuring range of the ruler 0-300mm, height of the angular frame 115mm, with protractor, center point measuring instrument and line drawing needle Precise scale: laser scale on the surface of the ruler, the figures and scales are clear, 2mm thickened ruler body, not easy to wear Versatile ruler: the angle frame is equipped with an automatic adjustment nut, which can adjust and measure at will. It also has the functions of a protractor, center point measuring instrument and level gauge Widely Used: Professional measuring tools, suitable for measuring angle, length , the center of the measuring circle, the standard angle of 45, etc. Product Description: Adjustable square made of stainless steel and alloy, durable, rust resistant and corrosion-resistant. Precise scale and multiple uses will bring you a different measuring experience. Professional measuring tools, suitable for measuring angle, length, measuring of circle center, the standard 45 angle, etc. Set of precise and durable square angle rulers for woodworking, construction or other purposes. Features: Ruler Material: Stainless Steel. Corner Frame Material: Alloy. Measuring Length: 0-300mm. Contents: 1 x 30.5cm combo square. Tips: 1. The angle ruler set is a precision measuring tool with multiple functions and many parts, please keep it away from children. 2: Kit manual measurement, please allow us to have a little difference, if you have any questions, please contact us first.