Description ? Quantity -- Set includes 4 measuring rulers, 1 20cm ruler, 1 180 protractor, 1 45 triangle and 1 60 triangle. ? Material -- The geometric ruler set is made of lightweight, thick plastic and hard to break. ? Design -- Hollow design, easy to use, easy to store and keep the desk tidy. ? Benefits -- The line scales is laser etched, the scale is accurate, the writing is clear and the paint will not fall off after a long time. ? Application -- The Mathematical Geometry Tools Set is a useful tool for architects, engineers, artists, designers, students, teachers, etc. suitable for schoolchildren. Features details ? QUANTITY -- The set includes 4 measuring rulers, 1 20cm ruler, 1 180 protractor, 1 45 triangle and 1 60 triangle. ? MATERIAL -- The geometric ruler set is made of lightweight plastic, thick and not easy to break. ? DESIGN -- Hollow design, easy to use, easy to store and keep the desk tidy. ? Advantages -- The scale line is laser engraved, the scale is accurate, writing is clear, and the paint will not fall off after a long time. ? APPLICATION -- The mathematical geometry duties set is a useful tool for architects, engineers, artists, designers, students, teachers, etc. suitable for school children.