Tinted transparent plastic and beveled center opening for easy pick-up. Protractor features graduations in 1/2 degree increments reading right to left and left to right. • Tinted transparent plastic and beveled center opening for easy pick-up. • /2 deg increments reading right to left and left to right. Tinted transparent plastic and beveled center opening for easy pick-up. Protractor features graduations in 1/2 degree increments reading right to left and left to right. Degree Graduations: 0.5°; Material(s): Plastic; Ruler Size: 6" Ruler Edge/180°; Color(s): Transparent Tinted.