【Lightweight and Portable】Compact design easy carrying, ready for any learning task at a moment's notice 【Precision Graduation Design】Fine-scale markings ensuring accurate measurements, effortlessly handling both geometric drafting and everyday tasks 【Multi-Functional Combo Set】Includes four tools such as rulers and set squares to meet diverse measurement requirements 【High-Strength Aluminium Alloy】Crafted from premium aluminium alloy, delivering exceptionally durability and resistance to deformation 【Safety Rounded Edges Craftsmanship】Each ruler features rounded corners to eliminate the risk of cuts from sharped edges