Clocore 360 Degree Protractor Double Scale Value Diameter 30cm Ruler, Beveled edges KQ300

360° Double Scale Protractor with 30cm Diameter Ruler  

Professional-Grade Angle Measurement Tool  

Key Features:  

- Full 360° Measurement Range  

  Accurately measure and construct angles in any direction (0-360°) with dual inner/outer degree scales for versatile math, engineering, and design applications.  

- Integrated 30cm Transparent Ruler  

  Combines a large-diameter protractor with a precision-calibrated ruler on a single shatterproof acrylic sheet, enabling simultaneous angle plotting and length measurement.  

- Ultra-Durable Construction  

  Crafted from 3mm thick optical-grade plastic for scratch resistance and long-term clarity. Withstands frequent classroom or workshop use without warping.  

- Enhanced Usability  

  - Non-Slip Grip Edges: Textured borders ensure stability during drafting.  

  - Laser-Etched Markings: High-contrast black/red scales resist fading.  

  - Radians Conversion Guide: Secondary scale for STEM/trigonometry calculations.  

Technical Specifications:  

- Material: BPA-free transparent polycarbonate  

- Dimensions: 30cm diameter circle + 30cm ruler extension  

- Scales: Dual-degree increments (1° precision) + centimeter/millimeter ruler  

- Compatibility: Works with dry-erase markers for temporary annotations  

Ideal For:  

- Geometry classes & university-level technical drawing  

- Architecture blueprints & mechanical engineering diagrams  

- DIY projects, quilting, and woodworking angle layouts  

Package Includes:  

1× 360° Protractor-Ruler Combo  

1× Quick-Start Guide (with angle calculation examples)  

1× Protective PVC sleeve for storage  

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This all-in-one tool eliminates instrument switching, offering unmatched efficiency for precise angle measurement and straight-edge tasks. ASTM International compliance ensures measurement reliability for academic and professional use.