Multifunction PD ruler, graduated in milimeter, made of semitransparent plastic Optical ruler Optical equipment Made in China About PD Ruler RS0107-ISpecifications: (1)Length of 150mm, graduated in milimeters;(2)Yellow, made of semitransparent plastic, flexible;(3)Extended ends for easy holding. About our company(Wenzhou Highcome Optical Co., Ltd): 1.The operating value of our company: ...