Features:1.Tri-Square, meter square, protractor, line scriber & saw guide all in one tool.2.Suitable tool for framing, roofing, building & remodeling projects, lipped edge for secure locating.3.Strong cast aluminium body with clear, embossed imperial graduations and common rafter conversion table. Features a protractor scale 0-90, Metric & Imperial Measurements.4.Use as saw guide for angle measurements and cuts, Ideal for all building and remodeling projects, also useful for hobbyists, home builders, manufacturers, DIYers & artists. Specifications:Material: AluminiumScale: 7"/12"Dimension: 18.5*18.5*26cm(7INCH); 30.5*30.5*43cm(12INCH)Color:BlackPackage Included:1x Tri-Square rulerNote:1. Due to the light and screen difference, the item's color maybe slightly different from the pictures. Please understand.2. Please allow 1-2cm differences because of the manual measurement.