Metal PD Ruler - Pupillary Distance Ruler with Instructions for Myopia Distance Glasses, Pupil Measurement Tool for Prescription Eyeglasses with Eye Care Tips

Well made, easy to use, and save.

This mm ruler is great for ordering glasses online

Very sturdy and super easy to use. We were able to get the numbers required to order glasses online with ease and accuracy.

I verified its accuracy using a ruler, and the measurements were correct. One thing I would change is placing the measuring area at the bottom so it would be below eye level. I had trouble because the device was casting shadows on my eyes, making it difficult to read. To overcome this, I held the device while taking a picture of my eyes. This allowed me to zoom in on the photo and make more precise estimates. However, I'll need to wait for my glasses to make a final analysis.

I was not pleased with the packaging. My product arrived with a slight bend, likely due to the flimsy envelope it was shipped in. No box, cardboard backing or blister pack was used around the product, just a cellophane sleeve. The metal is a ductile material (maybe aluminum?) A better choice might have been stainless steel, with some tensile strength. Clear plastic film was adhered to the front and back surfaces, likely to protect the graduated markings, but this was curled at the edges, so I peeled it off. In my opinion, the markings will not be long lasting. However, I do expect I will get one use from this tool, which is probably all that I need to order eyeglasses online.

Lo conpre para poder comprar unos frame online u me funciono bien.

Measure for glasses

Its little challenging to measure. Cannot bend much otherwise its going to be inaccurate and useless for future uses. Anyway its little pricey for the thing they sent us. I could rather use kids rules which costs less than a dollar.