Features: Premium 50cm stainless steel ruler features double scale (cm/inch) engraving for precise measurements, ideal for professional and DIY enthusiasts seek accuracy. Crafted with rustproof stainless steel, this thickened ruler maintains structural integrity in humid environment while resisting corrosion. Perfect for architects, artists, students, and craftsmen requiring reliable measurement tool for technical drawing or workshop projects. Wide application in classrooms, workshops, or construction sites – double as a straight edges for drafting, woodworking alignment, or home improvement tasks. Ergonomic anti slip grip enable secure handling during extended use and space saving vertical storage when not in use. Specifications: Material: Stainless Steel Length: about. 53cm/20.87in Scale: 50cm Thickness: 3mm/4mm/5mm (optional) Package Includes: 1pc Stainless Straight Ruler note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.