{"product_id":"large-triangular-ruler-angle-protractor-math-teaching-tool","title":"Large Triangular Ruler \u0026 Angle Protractor – Math Teaching Tool","description":"\n\u003ch2\u003eProfessional Large Triangular Ruler \u0026amp; Angle Protractor Set\u003c\/h2\u003e\n\u003cp\u003eTake your math and geometry lessons to the next level with this \u003cstrong\u003eProfessional Large Triangular Ruler \u0026amp; Angle Protractor\u003c\/strong\u003e. Designed for teachers, architects, engineers, artists, and students alike, this multifunction measuring tool makes geometry drawing, angle measurement, and classroom demonstrations clear, precise, and effortless.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge, Clear Scale Markings:\u003c\/strong\u003e Bold, easy-to-read numbers are perfectly sized for use at a blackboard, whiteboard, or dry-erase board — no squinting required from the back of the classroom.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetachable Grip Handle:\u003c\/strong\u003e The hollow center design pairs with a removable handle for a comfortable, secure hold during demonstrations and drawing sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable ABS Plastic:\u003c\/strong\u003e Wear-resistant and dimensionally stable — this ruler won't warp, bend, or scratch hands, even with daily use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmooth, Burr-Free Edges:\u003c\/strong\u003e Precision-molded corners and edges ensure accurate lines every time while keeping hands safe.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultifunction Design:\u003c\/strong\u003e Functions as a triangular ruler, angle protractor, and geometry drawing aid — a versatile all-in-one tool for school and office.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Size Options:\u003c\/strong\u003e Available in a range of sizes (see listing variants) to suit different classroom and workspace needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a math teacher drawing angles on the board, an architect sketching blueprints, a designer laying out geometric shapes, or a student working through geometry homework, this ruler set delivers the accuracy and visibility you need.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ABS Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Scenario:\u003c\/strong\u003e Teaching, drafting, design, geometry, school, office\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeights:\u003c\/strong\u003e 01 – 261g | 02 – 261g | 03 – 197.2g | 04 – 218.3g | 05 – 173.6g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Triangular Ruler \/ Angle Protractor \/ Compass (variant dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: 1 cm = 10 mm = 0.39 inch. Please allow 1–2 mm tolerance due to manual measurement. Colors may vary slightly from screen to screen.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more classroom and creative tools? Check out our \u003ca href=\"\/products\/1-set-pottery-clay-sculpting-tools-smoothing-wax-carving-pottery-ceramic-tools-polymer-shapers-modeling-carved-tool-sculpture\"\u003ePottery Clay Sculpting Tools Set\u003c\/a\u003e or our \u003ca href=\"\/products\/10-piece-complete-gardening-tool-kit\"\u003e10-Piece Gardening Tool Kit\u003c\/a\u003e for more hands-on tool sets.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of measurements can I take with this large triangular ruler and angle protractor?\u003c\/h4\u003e\n\u003cp\u003eA: This multifunction teaching tool allows you to measure and draw angles, straight lines, and geometric shapes. It functions as both a triangular set square and an angle protractor, making it ideal for geometry lessons, architectural drafting, and design work in school or office settings.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this triangular ruler suitable for use on a whiteboard or blackboard?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! The large, bold scale markings are specifically designed to be clearly visible on whiteboards, blackboards, and dry-erase boards — perfect for classroom demonstrations where students need to see measurements from a distance.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the handle removable, and how does it help during use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the handle is detachable. The hollow center combined with the removable grip handle makes it easy to hold the ruler firmly while drawing straight lines or demonstrating angles, reducing hand strain during extended teaching sessions.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is this ruler made from, and is it durable?\u003c\/h4\u003e\n\u003cp\u003eA: This ruler is made from high-quality ABS plastic, which is wear-resistant and highly resistant to warping or deformation. The smooth, burr-free edges are safe to handle and maintain their shape even with regular daily use.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of measurements can I take with this large triangular ruler and angle protractor?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This multifunction teaching tool allows you to measure and draw angles, straight lines, and geometric shapes. 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