1Pcs Practical Optical PD Ruler Pupil Distance Measuring Eye Ophthalmic Tool BH

Description

Feature:
The pd ruler can help you when you want to buy glasses online
Put the notch over your nose, as close to your eyes as you can, then find the middle if your pupils in a mirror,
Read the line closest to the middle of the pupils.
Long Handle Eye Occluder Optometry
That this does not come with any instructions,
So if you don't know how to take a PD measurement, you will need to look that up on the internet.
Description:
Material: Plastic,
Color:As the picture
Quantity: 1PCS.
Package includes:
1pcs Eye Occluder PD Rulers
Note
Please be reminded that due lighting effects, monitor's brightness/contrast settings Etc, there could be some slight differences in the colour tone of the website's photo and the actual item.
Item Measure by hand, it could be 3cm different,your kind understanding will be much appreciated