Ultrassist Pupillary Distance Ruler for Eyeglasses | Transparent PVC design measures single or dual PD from 46–84 mm, with three scale options($5.95Value)

Description

STEP-BY-STEP ENGLISH USER GUIDE: An English PDF user guide is available in the Product guides and documents section of this page. It explains preparation, correct ruler positioning, right- and left-eye monocular PD readings, binocular PD calculation, and helpful measurement tips BINOCULAR AND DUAL PD MEASUREMENT: The marked scales support both a single-number binocular PD reading and separate right and left monocular, or dual PD, values. Align the center notch with the nose bridge and read each measurement at the center of the pupil CLEAR 1 MM GRADUATIONS: The pupillary distance ruler measures 23–42 mm for each eye and 46–84 mm for binocular PD. Clearly marked 1 mm graduations help you read and record the measurement when the ruler is correctly positioned、 TRANSPARENT FLEXIBLE PVC DESIGN: The clear PVC material keeps the eyes and pupil centers visible during alignment. Lightweight and flexible, this manual PD ruler rests across the nose bridge without batteries, apps, electronic components, or sliding parts MEASURE WITH A SECOND PERSON FOR BEST RESULTS: Use the PD ruler in adequate lighting while the subject keeps their head straight, still, and facing forward. The measurer should stand directly in front at eye level. Repeat the measurement two or three times to check for consistent readings ECO-FRIENDLY DIGITAL MANUAL: We provide an electronic manual to reduce paper waste and support the environment. You can easily view and save it on any device. Check your email for the manual. If you have issues, find help in your order details. This pupillary distance ruler is essential for measuring PD accurately for eyeglasses. HIGH-QUALITY PVC MATERIAL: Our pupillary distance ruler is made of flexible, lightweight, and highly transparent PVC material. This ensures easy and accurate PD measurement. It is the ideal eye measuring tool for purchasing glasses. STABLE DUAL & SINGLE PD MEASUREMENT: The straight-edge design with a nose bridge keeps the ruler stable and centered. It measures single PD for one eye and dual PD for both eyes with accuracy. This eye ruler is perfect for eyeglasses fitting. WIDE PD MEASUREMENT RANGE: The PD ruler measures 23mm to 42mm per eye. The full PD range is 46mm to 84mm. It suits most people for accurate eye measuring and eyeglasses preparation. MULTI-FUNCTIONAL EYE MEASURING SCALES: This PD ruler has three scale options. You can measure single or dual PD quickly. All are on one ruler for easy use. It is a practical eye measuring tool for eyeglasses.