4 Piece Aluminium Geometry Kit Ruler 15 cm 180° Protractor 60° Triangle 45° Triangle for Students Architects Engineers and Draftsmen Black

Math geometry set is made of aluminum alloy, set includes 15cm stainless steel wave ruler, 60 degree and 45 degree right angle triangle and 180 degree protractor. The triangle ruler kit is composed of aluminum alloy laser engraving technology, which reduces wear caused by long-term use, does not fade or stain, and provides accurate scales. Black background, white checkmarks, easier to read each line and numbers of each line, easy to use. The ruler has rounded corners, which will not hurt your hands. Hollow design, easy to use. Includes ruler storage box for easy storage and keep your desk tidy. Geometric ruler set is suitable for teachers, students, draftsmen, builders, roofers, used to drawing, measuring and designing, suitable for beginners and professionals.