Description: PACKAGE CONTENTYou will receive 4pcs math rulers, includes 1pc 15cm/5.91inch straight ruler, 1pc 180 half-circle protractor, 1pc 45 isosceles triangle ruler and 1pc 60 right triangle ruler, enough style for daily study use. DURABLE MATERIALThe geometry math rulers are made of aluminum alloy, sturdy and thickened, not easy to deform or break, lightweight, durable to use, long service time. ACCURATE SCALEUV black ink printing, clear scale, makes it easier to read, accurate measurement, great math learning measuring tool, suitable for teachers, students, children, etc. EASY USEBoth the protractor and the triangle have a hollowed design in the middle for easy access. Protractor two-way scale design, can measure without flipping. Non-slip design on the back of the straight ruler, no offset when drawing lines. EASY STOREComes with PVC storage packing bag, commonly used graph area calculation formulas are printed on the bag, which is very convenient for learning, easy to carry. Specification: Material: Aluminum Alloy Color: Gold, Blue, Silver Straight Ruler measuring length: About 15cm/5.91inch Quantity: 4pcs/set Package includes: 1pc x 15cm Straight Ruler 1pc x 180 Half-circle protractor 1pc x 45 Isosceles triangle ruler 1pc x 60 Right triangle ruler Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.