Kirstein String Action Ruler

  • Practical tool in credit card format
  • Suitable for stringed instruments such as guitar, bass, ukulele, banjo etc.
  • Adjust string height, pickup spacing, string spacing and more
  • Also for measuring the depth of saddle notches or fret slots
  • Millimetre scale with 0.5 mm graduation and inch scale
-7,5 %

inkl. VAT. + shipping (DE)

In stock - immediately available
Delivery time 1 - 3 working days
Delivery on Tuesday, 04.04.2023, if you order within  1 Days 12 Hrs. 22 Min. with Express delivery.

The universal ruler tool - fits in every wallet!

With the Kirstein ruler tool for stringed instruments, you always have full control over the string action of your instrument. Whether guitar, bass, ukulele, banjo... the practical card is suitable for any stringed instrument and, thanks to its credit card format, can be carried in any wallet, even if you are on the road a lot. All scales and markings are in millimetres as well as inches. The vertical scales make it easy to measure the depth of saddle notches and fret slots or the height of pickups.

Easily adjust the string height
To adjust the string height, simply place the card at the 12th fret of your guitar and see at a glance from the markings whether you need to adjust the setting up or down. Recommendations for different stringed instruments are listed on the back of the card.


Product number 00042806
Colour Yellow


Based On 15 ratings
Show all reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star

A verification of the ratings has taken place as follows: Only customers who are registered in our online store and have actually purchased the product from us can submit a rating for the item in the customer account.

Useful utensil
Review from Joachim on 29.12.2020
This rating has been translated automatically. Original language flag from
 verified purchase
Easy to use and read. Very handy because credit card format. Useful because also information in inches.
For the bit of plastic actually overpriced, but something better geschwige because cheaper I have not found anywhere else.
Ruler for instrument settings
Review from Matthias on 25.12.2020
This rating has been translated automatically. Original language flag from
 verified purchase
Ruler tool in credit card format. Does what it is meant to do.
Good teaching
Review from Gerald on 25.10.2020
This rating has been translated automatically. Original language flag from
 verified purchase
Good gauge, but plastic. Does not matter, but metal would have been nice.
A very good tool
Review from Heinz on 23.06.2020
This rating has been translated automatically. Original language flag from
 verified purchase
To adjust the neck curvature and the string action, this small ruler is really highly recommended. The format has the size of a check card and is very handy and easy to read, although a bit expensive. What surprised me, however, is the fact that it was sent in a box the size of half a shoebox with a parcel service, a small letter would have been quite sufficient. What is this nonsense, you can be glad that it is not a Euro pallet, because I do not have a forklift in the house. Nevertheless, also because of the annoying waiting time for the DPD parcel carrier, I would want to buy the tool again and again, because it is good and usable.
Great help
Review from Anonymus on 11.03.2020
This rating has been translated automatically. Original language flag from
 verified purchase
Does what it's supposed to, it's just a check card, but advantage to it is that it doesn't scratch anything.

Questions about product

Ihr hättet mal ein video drehen können : Wie benutzt man den Rock N Ruler bei der einstellung einer E-gitaare und Accustcgitarre:
Question by Peter winkler on 30.01.2021
Answer by Maximilian Bauer - Musikhaus Kirstein
Für dieses Produkt gibt es zwar kein spezielles Video, ein kleines Tutorial, wie man die Saitenlage richtig einstellt, haben wir aber:

Your question about the article Kirstein String Action Ruler

Your question will be forwarded directly to the department and answered as soon as possible.

I agree that my question and my name will be posted on this page, provided this information is useful to other customers. A revocation of my consent is possible at any time with effect for the future.
Your contact persons

The hotline is currently not manned. You can reach us again on Monday, 03.04.2023 at 09:30.

Monday 09:30 - 18:00
Tuesday 09:30 - 18:00
Wednesday 09:30 - 18:00
Thursday 09:30 - 18:00
Friday Closed
Saturday 09:30 - 13:30