【Premium Material】Made of high quality plastic, the surface is smooth, durable and safe. Will not scratch hands, not easy to damage, and can be used for a long time. Light weight, accurate scale and easy to carry.
【Packing List】You will receive five pupillary distance measuring rulers. Enough for daily use and replacement.
【Easy to Use】When you want to change glasses or lenses, PD ruler can help you. Put the gap of PD ruler on your nose, as close as possible to your eyes, find the middle of your pupil in the mirror, and read the line closest to the middle of your pupil.
【Widely Use】Double-sided printing can be used by both left and right hands. It can also be used to measure the distance between the eyes or the length of the lens.
【After-sale Service】We provide the best products and services. If any question about this product, please feel free to let me know, we will give you the most satisfactory answer as soon as possible.