This 2-pack from Zonon includes a 12-inch ruler and a 6-inch protractor, both featuring a distinct green tint. This color choice is designed to reduce eye strain under bright classroom lights and provides high contrast against white paper. The tools are made from transparent polystyrene, which offers a "glass-like" clarity that is helpful for tracing and detailed layout work.
The set features a dual-scale design with accurately aligned imperial and metric measurements, making it suitable for a wide range of math and geometry assignments. These tools have a thin profile that makes them easy to slide into a folder or notebook. While they are designed for the high-visibility needs of a classroom, they are best stored in a way that prevents them from being flexed under heavy weight to maintain their shape and integrity.
If you need a more robust set that includes a compass and a protective carrying case, consider the Maped Study 10-piece set.
You can find more specialized measuring and drafting tools in the ruler and protractor geometry sets category.