Tyeign 4 Mm Thick Stainless Steel Ruler 21", Precision Straight Edge for scholar Drafting, Classroom, Engineering Drawing, Craft & Office Measuring Tool, 1 Stainless Steel Measuring Ruler

Welcome to Tyeign! We select all kinds of high-quality kitchen supplies and everyday tools and home decorations for you.

scholar-Proof Strength: Machined from 4 mm (0.16 in) stainless steel, this 53 cm (20.9 in) ruler resists bending when hurried scholars stuff it into backpacks, yet remains lightweight at 110 g (3.9 oz) for all-day classes from geometry to technical drafting.
Crystal-Clear Markings: Deep black engravings show 1 mm and 1⁄16 in increments that won’t rub off after semesters of erasing. The satin surface reduces glare under fluorescent lights, protecting young eyes and improving accuracy during timed tests or intricate art projects.
Classroom-Safe Edges: Each long edge is chamfered and deburred to prevent paper cuts and snagged sleeves, while rounded ends slip easily from pencil cases without poking holes in pockets—perfect for elementary teen through college labs.
Multi-Subject Versatility: Ideal for math diagrams, science fair posters, architectural drafting, and craft cutting. The 0° straightedge doubles as a guide for hobby knives, ensuring clean lines in foam board, balsa, or vinyl without damaging expensive specialty blades.
Affordable Bulk Option: Available individually or in classroom packs, the ruler stacks neatly in supply closets and cleans with a quick swipe of sanitizer. Invest once and equip STEM, art, and vocational programs with a measuring tool that survives the rigor of daily academic life.