Material: PVC. Measuring range: 0-100mm. When you want to buy glasses online, PD Ruler can help you.
Easy to use: Place the notch as close to the eye as possible, then place it in the mirror. If your pupil is in the mirror, find the middle and read the line closest to the pupil¡¯s midline.
No instruction prompt: No instructions, so if you don't know how to perform PD measurement, you need to search on the Internet.
Size: about 21x5x0.7cm / 8.26x1.96x0.27Inch (LxWxT).
Description
Matters needing attention in measuring interpupillary distance: 1. Keep your eyes squarely ahead and look at the still life about 20 meters away (If you are in a house, look into the distance), Do not turn your eyes during the measurement. 2. Do not measure in the mirror by yourself, Please ask family or friends to help with the measurement. 3. Please start the calculation from the 0 degree scale of the ruler, Do not start counting from the edge of the ruler. Measuring range: 0-100mm Material: PVC Color: white color Size: about 21x5x0.7cm / 8.26x1.96x0.27Inch (LxWxT).
