Luxvision MES-6040PD Scale/ Ruler. Comes with a plastic container to store in.
Multi-use rule/scale. PD is the distance between pupils, or Pupillary Distance. Plastic scale/ ruler. Comes with a small ready to go plastic container to store ruler in.
- Non- erasable
- Does not scratch lenses.
- Begins with "0" at the outer edge for easy end - to- end readings.
- Scale in millimeters