Dual-Function Protractor / Scale Rulers Measure Lines and Arcs
Versatile Protractor / Scale Rulers feature 180° protractors as well as engineering type graduations in 10 and 50, 10 and 20, 20 and 40, and 30 and 60 parts to the inch. Flexible, transparent instruments have permanent laminated black markings for easy reading and durability. Choose from four different dimensional scales.