Feature: 1. High Accuracy Measuring: This optical pupilometer can accurately measures the distance between pupils, ensuring excellent fit when checking the eyes for glasses. 2. Versatile and Practical: The pupillary distance meter can be a must have tool for opticians, optometrists, ophthalmologists, and those who want to buy glasses online, making the glasses fitting process convenient and efficient. 3. Easy to Operate: The interpupillary distance meter scale is straightforward and easy to use, enabling quick point sampling with high location accuracy, saving time and effort. 4. Premium Material: Constructed from high strength materials, this pupilometer distance measuring tool is sturdy and not easily damaged, designed to last and deliver consistent, reliable readings. 5. Clear Reading: With clear scale, the pupillary distance tester enhances the accuracy of the tool, providing accurate pupillary distance readings for clear, and individually fitted glasses wear. Specification: Item Type: Pupillary Distance Meter Measuring Range: Total Pupil Distance of Both Eyes : Approx. 42~82mm Distance Between Left and Right Eye Pupil: Approx. 21 ~ 41mm / 0.8 ~ 1.6in. Package List: 1 x Pupilary Distance Meter