Fralin Pickups String Spacing

How Do I Check My String Spacing?

Last Updated: May 14th, 2021

String Spacing is a time-old question we get asked all the time – 49.2mm, 49.5mm, 50mm, 52mm – which one is right for my guitar? Today, we’ll talk about how to check your string spacing, and answer some basic questions you might have about string spacing in general.


Pretty important. The pickup’s magnets or pole pieces act as a conductor for the magnetic field of the pickup – and if your strings are not in line with the pole pieces or magnets, you could have a loss in string balance. That said, your strings don’t have to be 100% dead-on with the pole piece. See below for dos and don’ts:

How do I Check My String Spacing on Guitar

The first two examples will work fine. Most guitar players won’t be able to tell the difference between the two. However, the third example will be noticeable. The string is on the outside of the pole piece, and out of the active magnetic field. You will certainly notice a drop in volume and a general lack of response with this third example.


Easy. Just have your guitar handy, and a ruler that depicts the millimeter section. You want to measure from the center of each of the outer pole pieces. For example, see below:

How to Measure your Guitar's String Spacing

Each of the above examples is correct ways to measure your string spacing on your guitar. As you can see, each of the humbuckers above is the same physical size, but their spacing is different.


  • 49.2mm = 1-15/16″
  • 50mm = 1-31/32″
  • 52mm = 2-1/16″


If you don’t have the pickup already installed to see what string spacing you’re trying to replace, measure the strings. Slide the ruler under the strings and see where they fall in the approximate location of the pickup. You will see where the strings fall and can determine your string spacing from there.


Measuring both pickups is very important. Depending on your bridge and nut, your pickup spacings may be different. Now that you know how easy it is to measure your String Spacing, take a quick measurement of your bridge pickup as well as your neck pickup. On Fender-style instruments, most of the time you will have a 52mm Bridge and a 50mm neck, as the strings “taper in” the closer you get the headstock.

Written By:

Tyler Delsack (Manager, Fralin Pickups)

👋 I'm Tyler Delsack, the Manager of Fralin Pickups. Along with managing the shop and working on this Website, I run my own website to provide free Jazz Guitar lessons.


  1. gino m garrisonsays

    I bought a after market neck for a strat partscaster, the neck was listed as 56mm but came in about 55mm..i found that my normal go to pickup pole pieces would not line up well with the strings..they were 52mm, 50mm, 50mm…i had to change pickups to 52, 50, 48 and that cured the problem. I would have tried another neck but the one i had was too perfect for the guitar. So a couple shims later we were smokin’. thanks for info.

  2. Sorry but the info on the spacing is incorrect. 2-1/16 inch is not the same as 52mm, it’s a bit wider, therefore 52mm covers won’t fit on a 2-1/16 inch spaced poles pickups. I’ve seen 2-1/16 inch listed as 52.3mm and 52.5mm, buy at your own risk. I’ve returned 2 sets to Amazon, but the 3rd one fits perfectly, and it was listed as 2-1/16.

  3. sam choisays

    How can i check and measure fender guitar strings with pickup.

    1. Sam, the guide above lays out the process. Measure the E string to E string over the pickup using a ruler with mm increments, and it should tell you what string spacing is optimal.

  4. Thanks! I needed that. I have an 82 Fullerton tele and the neck pu is so treble and glass like it is just shrill. I want something mello , almost Jazz like . What pu would you recommend?

    1. Tyler Delsack - Fralin Pickupssays

      Hey Monte,

      Check out the Tele Split Blade.

      If you have 250K pots, I would use a Blues Output Tele Neck and you’ll have a warm, dark jazzy tone.

  5. Kevin malloysays

    How about pickup height adjustment the lower I go the more weak it gets less highs what would be the best string to pole piece height for your 15% over humbucker

    1. Tyler Delsack - Fralin Pickupssays

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