4Pcs Multifunctional Geometric Math Measuring Rulers for Drawing Art

4 Pcs Multifunctional Geometric Ruler,Math Measuring Rulers for Drawing and Art,Metric Ruler Drawing Tool for School Office Supplies and Building Supplies[Package Includes]: This set includes 4 pcs transparent drawing rulers(Three white and blue semi-oval long rulers and one square multifunctional ruler).These metric rules with clear measuring scale tool.that ensures accurate and professional results, making it an essential addition to your drafting supplies.[Rotatable and Movable]: Three semi-oval long rulers have a blue rotatable circular protractor in the top area and a blue removable straightedge in the centre area.The square multifunctional ruler has a rotatable centre area.[Resistant to Breakage]: These plastic rulers is a sturdy and long-lasting drafting tool, perfect for student,architects, artists, and drafters.[Convenient and Efficient]: This drawing ruler provide the ability to draw angles to measure corners, draw floor plans, three-dimensional drawings, parabolas, and rotat