This versatile 3-piece goniometer set is an essential measuring tool for precise angle measurements and layout work. Each clear plastic protractor features easy-to-read markings and a rotating arm that allows for accurate angle readings from 0 to 360 degrees. The transparent construction helps you see your work surface clearly while taking measurements. Perfect for technical drawing, carpentry, engineering projects, and educational purposes, these durable protractors include both metric and imperial measurements along their edges. The set's lightweight yet sturdy design makes it convenient for both portable use and desktop work. These multi-purpose measuring tools are ideal for professionals, and DIY enthusiasts who need reliable angle measurements and straight edge capabilities in their projects.