2 Pieces PD Ruler Measure Optical Vernier PD Ruler Pupil Distance Meter Ruler Eye Ophthalmic Tool for Eye Test Pupillary Distance Ruler Plastic Optical Pd Ruler Pupil Distance Meter Eye Tool

2 Pieces PD Ruler Measure Optical Vernier PD Ruler Pupil Distance Meter Ruler Eye Ophthalmic Tool For Eye Test pupillary distance ruler plastic optical pd ruler pupil distance meter eye ophthalmic tool Features: quality plastic material for long time use. Lightweight for easy and portable carry. The optical pupil distance rulers are durable and flexible, therefore they will not easily to break. They are not used to measure the pupil spacing and frame pupil distance, but also for the goggles. The size is 15cm/5.90inch. The frame is etched with marks to provide an accurate reference point. The material is comfortable, lightweight, and of medium thickness. Ergonomic design, and accurate scale. Specifications: Material: Plastic Color: As The Picture Shows Package Weight: approx.6g Size: approx.15cm/5.90in (More Size Detail, Please See Photo.) Package Includes: 2Pcs Pupil Distance Ruler Note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!