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Your cart is empty. String ruler:
A ruler for measuring string height, frets, nuts, saddle, and other parts of a guitar.
Material: stainless steel
Size: 55mm×90mm×1mm
Weight: about 30g
Graduations displayed: mm and inches
The surface is used for adjusting the string height.
Hassle-free. By just holding this card to the strings, you can visually find the suitable string height.
Fritz ruler
For use on various guitars such as gut guitars, electric guitars (raise or lower string height), acoustic guitars, and bass guitars (including six string bass guitars).
The reverse side is for string spacing adjustment.
The string spacing pitch displayed is 38/40/41.5/43/45mm on guitars;
38/40/42/45mm on bass guitars (can also be used on five string bass guitars);
and 50/52mm on gut guitars.
With only this card too, distortions and gaps can immediately be identified.
An indispensable item for guitar work. For guitar crafting or repair.
Jinx Lee
Reviewed in the United States on March 13, 2025
This little item is essential for any guitar player. I use it a lot on all of my guitars and electric bass guitars. It helps you to cut the technical work down and eliminate the guess work when it comes to adjusting your action gauge and neck adjustment like the pros. I keep it in my guitar tool box. And I have used it many times to get the best action on the guitar neck. It is a great little investment and a valuable tool for any guitar workshop. On any level.
;)
Reviewed in Canada on March 1, 2025
good product to setup all my guitars
OCD reviewer
Reviewed in the United States on July 1, 2024
I got this because it was cheap. They are accurate and functional. But definitely for amateurs.
Customer
Reviewed in the United States on February 1, 2024
This is comparable to much more expensive tools
Joseph Bleau
Reviewed in Canada on December 9, 2024
More durable than the plastic variety.
Ed.Shevsky
Reviewed in Canada on October 19, 2024
I saw in the comments below that the scale is inaccurate. I checked with several rulers, and everything matches.
Granular drift
Reviewed in Canada on October 1, 2024
Amazing quality of The String Action Ruler for this price! The hash marks are engraved into the metal!
S Haavisto
Reviewed in Canada on April 30, 2024
Wonderful tool at an excellent price!
Wendy
Reviewed in Canada on October 14, 2022
Arrived quickly and very easy to use.
Ron Cairns
Reviewed in Canada on October 24, 2020
Never had these scales before as I simply used a ruler or the thickness of the different coins. Online You Tube See Dave's World Of Fun Stuff. He will show you how to.. Great guy and a long time bass player also He will let you know how these things work and how to tune them. A must have if you play guitar or bass and want to keep it in good adjustments .
Nathan S. Cheatham
Reviewed in the United States on March 24, 2018
The ruler gauge is a very useful tool for not just setting up a guitar but has other uses as well. It’s well built but is obviously punched out of a sheet of metal. I say this because the entire perimeter/edges are very sharp and you will need to use a really fine grained file or sandpaper to smooth the edges. If you run your fingernail across the surface of the printing, it definitely feels laser etched. So I think the ink wearing off will not be an issue. Also, the ink printing is very fine and well done. I’m not sure what the plastic card is used for or how to use it, there were no instructions. This product is definitely worth the price.
Dmitri
Reviewed in Canada on January 29, 2018
Mostly good. Does what it should. The edges are a bit rough, though, and the markings are positioned just slightly off in relation to the edges. If you take the burr off the edges, it's workable though.
Chris
Reviewed in the United States on April 19, 2018
Good set of measures to keep at the bench, really a must have for any luthier, guitar enthusiast or builder/hobbyist. Only gripe is the rough edges, wish this had been deburred before shipping. Definitely need to get rid of the rough edges of you're using this on a finish you want to be careful with.
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