Item Type:Ophthalmic PD Ruler_x000D_ Material: Plastic _x000D_ Use: Eyelid Measuring Tape 1Easy to Use: Glossy edges with bridge design, good positioning and perfect matching make PD measurement easy and accurate. 2Wide Application: Easy and comfortable to use for right hand or left hand, also can be used for measuring eyeglass frame replacement. 35pcs: 5 pupil distance rulers in total, with clear data marking, suitable for ophthalmologists and opticians. 4Applicable Scenarios: Eye ophthalmology ruler tool helps you measure pupil distance and can be used for visual testing at home, school, hospital, etc. 5Plastic Material: Eye ophthalmic tool is made of plastic material, wear resistant and durable for long time use.5 x_x000D_ _x000D_ OphthalmicPDRuler