not Slip Craftsmanship: Features a unique not slip base to secure stability during use, measurement errors caused by sliding Ideal for accuracy tasks like architectural drafting and artistic creation Lightweight & Portable: Constructed with lightweight aluminum alloy for easy carrying and operate, reducing fatigue during prolonged use Great for professional who travel frequently or need portable tools Guided accuracy Measurement: Built in guide structure enables more line drawing, eliminating manual measurement deviations Widely used in engineering drafting and projects Strong Protective Design: produced of thickened aluminum alloy, this ruler durability and protect, solving the fragility issue of traditional rulers Perfect for professional craftsmen and designers needing high strength measuring tools Versatile Applications: Combines multiple measuring functions for needs, from home renovation to industrial surveying Suitable for advertising design, cutting, and other accuracy tasks, Manufacturer: HDOYTXXM