Specifications: Tri-square, meter square, protractor, line scriber & saw guide all in one tool. Lipped edge for secure locating. Manufactured from strong aluminium. Strong cast aluminium body with clear, embossed imperial graduations and common rafter conversion table. Features a protractor scale 0-90 degree, metric & imperial measurements. Use as saw guide for angle measurements and cuts, ideal for all building and remodeling projects. Also useful for hobbyists, home builders, manufacturers, artists. Item Name: Triangle Ruler Material: Aluminum Alloy Measuring Accuracy: 1mm Features: Portable, Triangle Shape, Lightweight, Measuring Tool Size: 18cm/7.09" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Triangle Ruler