Versatile Measuring Tool: These protractors double as rulers, enhancing functionality for diverse projects. The transparent material allows for viewing text and diagrams underneath, essential for geometry, drafting, and art tasks. and Precise: Made from shatter- plastic, these protractors clarity and durability. The 180-degree scale is marked in bold black for easy reading, with precise 1-degree increments for accurate angle measurements. Bulk Classroom Supply: This set includes 100 high-quality, 4-inch clear plastic protractors, making it perfect for schools, offices, or art studios. Ideal for educators and professionals requiring dependable measuring tools in large quantities. Compact and Clear Design: Each protractor is 4 inches (10cm) along the base, fitting easily in textbooks and pencil cases. They feature clear, easy-to-read centimeter and inch markings, suitable for a variety of math and art applications. Educational Must-Have: Designed for enhanced visibility, each protractor features clear demarcation lines every 10 degrees and numbered increments. and with smooth edges, they are safe and essential tools for educational and DIY projects., Weight: 0.992080179 Pounds, Manufacturer: Hipzeepo