The straight ruler is made of aluminum alloy, with high hardness, strong toughness, anti-rust and anti-corrosion, strong and durable, lightweight and reliable.High-gloss anodized surface treatment that ensures lightweight construction while significantly improving its wear and corrosion resistance, plus laser-etched scale markings for sharp, durable readability.This ruler features a rounded-edge design with no burrs for safe handling that won't scratch your hands; its hollowed-out center comes with wavy lines to facilitate easy division and marking of measurements.The straight ruler is widely used in geometric drawing, plane drawing, composition planning, and mathematical chart drawing; it is suitable for classrooms, architectural design, art design office occasions, and other work environments that require precise measurement or drawing.
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