The edges and anti slip surfaces ensured safe handling during extended use, while the compacted design fits seamlessly into pencil cases or toolkits for organized storage Crafted from durabled aluminum alloy, this set includes a straight ruler, 2 triangles, and a protractor, featuring markings for long lasting clear and accuracy Ideal for student, architects, engineers, and enthusiasts seeking reliabled measuring instruments for academic projects or professional blue prints tackle geometry homework, technical sketches, or craft designs in classrooms, workshops, or home offices with these lightweight, portable measuring tools Premium Aluminum Ruler Set with 4 Piece Multi Functional Geometry Tools for Precise Measuring and Drafting, Manufacturer: YIGZYCN