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Optical accessories DesGlasses & Sunglasses

Optical accessories 1x PD/Pupillary Distance Rule

4.4 / 5 (112)  |   100% of customers recommend this product

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

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  • Available to Order   More Details
  • FREE Delivery on orders over $69.09
  • Dispatched from Westgate on Sea, UK

 Single vision items usually completed within 7-10 working days. Allow longer for 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

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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

4.4 / 5 - 112 Review(s) - Add your review

 100% of customers recommend this product (63 of 63)

Customer Images

  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

  PD Ruler

31st December 2019

This is a must have and delivery was very prompt

Fit - As expected I'd recommend this product

  Does what it says on the tin

23rd December 2019

I ordered one of these to make sure my pupillary distance was accurate. It's easy to use, takes the guesswork out of measuring PD.

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.

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