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The tool checks the neck straightness & fretboard flatness independent of the frets. 



The unique design of the notch spacing allows the tool to be used on an infinite number of guitar scales within the range quoted. Any scale length that falls between 24” and 27” (610mm-686mm) will be catered for. This includes over 20 popular scales including Gibson, Fender, PRS, Gretsch and

the following: 24", 24.5", 24.5625", 24.625", 24.75", 24.84", 24.9", 25.0", 25.34", 25.4", 25.5", 26", 26.25", 26.5", 27", 630mm, 635mm, 640mm, 645mm, 650mm, 660mm & 670mm.


Multiscale guitars within 24" to 27" range can be checked.



The tool has 18 notches. The design of the tool is based on only checking the length of the fretboard that is capable of being deflected. The highest frets are omitted as these are past the heel/neck join and won't be affected by truss rod adjustment or string tension.


The positioning on the neck will vary depending on the scale of the instrument.

A double dot mark for position reference is provided at the 12th notch.

For shorter scales the dots are placed at the 11th fret.

For 24.5"-25.5" range, the dots are positioned at the 12th fret.

For longer scales the dots are placed at the 13th fret.



1) Precision Straight Edge - 400mm Long. For precision tasks including checking fret levels.

2) Removable Steady - This prevents the tool from toppling over, allowing it to remain positioned on the neck during setup and adjustments. Free-standing use provides easy observation of changes to neck when adjusting the truss rod. (The steady can be used with or without strings fitted).



Further details on the tool can be found on the neck setup general information page.



Please see the Product Category  page for related items.

24"-27" MULTI GUITAR SCALE NOTCHED STRAIGHT EDGE - With Precision Straight Edge

  • “I received the notched straight edge today and just wanted to let you know I am very happy with it. The quality of the tool is outstanding. The integrity in the work you do is evident in the workmanship of your products. Thank you”. Jeff W., New South Wales, Australia.

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