High quality soft plastic, the ruler can help you when you want to buy glasses online, put the notch over your nose, as close to your eyes as you can, then find the middle if your pupils in a mirror, read the line closest to the middle of the pupils. It used to measure the pupil spacing and frame pupil distance. 8 1/4" L x 1 15/16" W x 1/16" H
8 1/4" L x 1 15/16" W x 1/16" H
Price includes 1 color, 1 side, 1 location. Add setup charge $30USD.