15/20/30/50cm Stainless Steel Ruler Metric Inch Straight Edge Precision Measuring Tool for School Office Engineering Tools

Premium Stainless Steel BuildMade of high-quality stainless steel, rust-resistant, corrosion-proof, and not easy to bend or deform, ensuring long-lasting use without wear or fading.Dual-Scale Precision MeasurementClear etched metric (cm) and inch scales, with red highlighted key marks for quick reading. The 1mm minimum graduation meets your daily and professional measurement needs.Safe & User-Friendly DesignSmooth rounded edges prevent scratches, and the hanging hole allows easy storage. The straight edge is perfect for drawing lines, marking, and craft projects.Multi-Size OptionsAvailable in 15cm/20cm/30cm/50cm to fit different scenarios, from school homework to engineering work, woodworking, and drafting.Widely ApplicableIdeal for students, engineers, architects, designers, and DIY enthusiasts. Suitable for school, office, workshop, and home use.