The Helix 15cm Four-Piece Geometry Set is a compact and essential collection of tools designed for students and professionals engaged in mathematical and technical drawing tasks. This set includes a 15cm ruler, a 10cm 180-degree protractor, and two set squares (45° and 60°/30°), all made from durable, shatter-resistant plastic. The clear material ensures easy reading of markings, which feature both metric and imperial graduations for versatile use. The protractor's reverse 180° scale enhances usability, and the set squares provide precision for various geometric constructions. This lightweight and portable set fits easily into standard pencil cases, making it ideal for use in classrooms, offices, or at home.