MATH SET 4PC WITH CENTRE

4-Piece Geometry Ruler Combination Sets w/ Center Wheel Compass. All Rulers are in inches centimeters Geometric Ruler Sets includes: 12″ (30 cm) ruler 5.25″ (13.3 cm) 30 Ëš /60ËšTriangl e ruler 4.25″ (10.8 cm) 45Ëš /90Ëš Triangle ruler 4″ 180Ëš Protractor Center wheel Compass