Description: Easy to Use: This digital pupillary distance meter is designed for easy use. Simply place the tester over your nose, as close to your eyes as possible, then find the middle of your pupils in a mirror. It provides accurate measurements closest to the middle of the pupils. Separate Distance Measurement: The device is capable of measuring distances separately, providing more and individualized results for each eye. Clear LCD Display: Equipped with an LCD display screen, this tool allows you to easily read and understand testing results without any hassle. Material: Made from pp, this pupillary distance meter is built to last, ensuring long term use. Product Specifications & Package Contents: The product dimensions are 176x89mm making it compact and portable. Each package includes digital pupillary distance meter and a USB cable for charging or data transfer. Size Chart: 17.6cmx8.9cm/6.93inchx3.50inch Package Includes: 1X Digital Pupil Distance Meter 1 USB Cable Note: Please allow slightly errors 1-2cm differences due to manual measurement.