Source optometry PD meter ophthalmic eye pupil distance measuring ruler optical pupilometer CP30 on m.alibaba.com
Optical Digital PD Ruler Pupilometer Pupil Distance Meter Tester Interpupillary Distance Scale Optometry Tool with Memory Function: Amazon.com: Tools & Home Improvement
Amazon.com: AISITESY Optical Digital Pupillary Distance Meter Led Pd Meter Pupilometer Interpupillary Distance Measuring Tool Ophthalmic Equipment with LCD Display Optical Pd Pds(Battery Not Included) : Tools & Home Improvement
Digital PD Meter – Lenscan Medical Inc.
Optometry Equipment Optical Digital Pupilometer PD Pupil Meter Rechargeable Eye | eBay