Ultrassist Pupillometers for Measuring Pupillary Distance (PD) with Electronic Instruction Manual, Transparent PD Ruler, Essential Tool Single or Dual Measurement

Electronic Manual：We use an electronic manual not only to reduce paper waste and support environmental efforts but also to let you easily view and save it on any device. Please check your email for the electronic manual. If you encounter any issues accessing it, you can find further assistance in your order details. High-Transparency PVC Material: Our pupillary distance ruler is made from high-quality PVC material, which is flexible, lightweight, and highly transparent, ensuring easy and accurate measurement of your pupillary distance. It is the ideal optician tools for purchasing glasses. Dual and Single Eye Measurement: The innovative straight-edge design combined with a nose bridge feature ensures that the ruler remains stable and centered during measurement. Whether measuring single PD (pupillary distance for one eye) or dual PD (pupillary distance for both eyes), accuracy is guaranteed. Wide Measurement Range: The PD measurement range covers 23mm to 42mm (for each eye), with a complete PD range of 46mm to 84mm, suitable for most individuals. Multi-Functional Scale Design: This pd measurement tool for eyes features three different scale options, allowing you to quickly measure either single or dual PD, all on one ruler for simple and convenient use., Manufacturer: Ultrassist Direct