Hey! We think you're in United States of America
Shop there in $ USD

10% OFF for New Customers   Get Discount »
No discount codes currently available.

For new customers get 10% OFF your first order - Simply sign up to our email to receive your code (please note that discount is not automatically applied!).
Optical accessories DesGlasses & Sunglasses

Optical accessories 1x PD/Pupillary Distance Rule

4.5 / 5 (114)  |   100% of customers recommend this product

White Rule 1x PD/Pupillary Distance Rule Accessories, Optical accessories

Choose Option:

  • Available to Order   More Details
  • FREE Delivery on orders over $69.58
  • Dispatched from Westgate on Sea, UK

 Single vision items usually completed within 7-10 working days. Allow longer for multifocals, complex prescriptions & tints - Details »

Product Description

FREE Delivery on this item

Actual PD Rule received may differ slightly from that shown in the image above.

Video Guide - How to Measure Your PD (Pupillary Distance)

View our help section under PD/Pupillary Distance to find out more information to measure your PD accurately.

Product Overview


Optical accessories 1x PD/Pupillary Distance Rule

Product SKU


Order by phone

Call us on 03303 801 190
Mon. to Fri. 9am - 5pm GMT

Secure Payments

All major payment cards & methods accepted.

100% Satisfaction.

Not happy with your new glasses? We'll give you your money back! Full T&Cs.

Customer Reviews

4.5 / 5 - 114 Review(s) - Add your review

 100% of customers recommend this product (65 of 65)

Customer Images

  The glasses are great quality and a really good fit!

6th April 2021

This is the first time that I've ordered glasses on line and I am very impressed with the glasses I've received. They are really good quality and fit perfectly!
Sadly the time they took to arrive was much longer than expected, 3 weeks between ordering and dispatch, this was rather disappointing.
The PDR I ordered never arrived.
Overall, excellent value for money if you are prepared to wait.
Thank you x

Fit - As expected I'd recommend this product

SelectSpecs.com says...
Hi, we can confirm the PD Ruler was dispatched on the 2nd February, please contact our customer services team if you did not receive this.

  PD measure

13th March 2021

Great little tool to give you accurate reading

Fit - As expected I'd recommend this product

  As expected

5th September 2020

Item as expected delivered on time all ok

Fit - As expected I'd recommend this product


22nd May 2020


Fit - As expected I'd recommend this product

  The one you need.

20th March 2020

The ruler is great. It has a dual rule system; one is the standard 15cm rule which the other is between 20 to 40mm on both eyes. The standard rule allows you (with a friend) to take a binocular pupil distance reading and the other rule allows you (with a friend) to take a monocular pupil distance. (Binocular is the distance between your eyes // Monocular is the distance between your pupil(s) to the centre of your nose)

The monocular is ideally the one you should go for. It's said to be more accurate than the binocular in most cases. This came true for me as my right eye is 1mm more than my left eye. Had the binocular pupil distance had only been taken, it may have unforeseen caused vision issues.

Fit - As expected I'd recommend this product

+ Show 5 more

Product Help

Help with frame sizes

Finding the correct frame size to suit you requires you to know a little about the different measurements that are used.  Size information is normally broken down in to arm / temple length (ranges between 120 - 150mm), bridge width (ranges between 14 - 24mm, and lens width (ranges between 40 - 62mm).  We also include a frame height measurement where possible, this can vary depending on frame style.

If you require further help, please do not hesitate to contact our customer service team on 03303 801 190 (Mon - Fri, 9am - 5pm) for further assistance.

I already have glasses, how do I find out their size?

If you have a pair of glasses that are a perfect fit, you can usually find the frame size information on the frame - usually on the arm or the bridge.

Size Guide - Frame Dimensions

What to look for?

What to look for?
You will often find a variety of information on the frame, including model number, branding and frame sizing. The numbers you are looking for will be similar to this format 150 - 22 - 50 although this can vary from manufacturer to manufacturer.  These numbers provide the following information:-

150 - Arm / temple size (in mm), a 3 digit value normally ranging from 120 - 150.
22 - Bridge size (in mm), a 2 digit value normally ranging from 14 - 24.
50 - Lens width (in mm), a 2 digit value normally ranging from 40 - 62.

I want a size that's not listed

We do our best to ensure we stock all available items from all our supplied brands so if an item is not listed it may be out of stock or discontinued. If you do not see the frame size you require please contact us through our Customer Services system where we will try to assist you.

View 360° Image

You can rotate the image by clicking on the image and moving your mouse left or right.