Guitar Neck Dual Notched Straight Edge 24"- 30".
The tool accurately checks the neck straightness & fretboard flatness independent of the frets.
The notched straight edges were designed using CAD and the geometry proven for any scale size that falls within the range quoted.
The tools are made from stainless steel and are 100% inspected for accuracy. The edges are lapped flat to within a total tolerance of 0.035mm (0.0015") over the whole length. This is checked on a calibrated (grade 000) precision granite inspection table - (table flatness 1.5 microns).
A removable steady prevents the tool from toppling over, allowing it to remain safely positioned on the neck during setup and adjustments. (The steady can be used with or without strings fitted).
The design of the tool is based on checking the length of the fretboard that is capable of being deflected. The very highest frets are omitted since these are well beyond the heel/neck join and won't be affected by truss rod adjustment or string tension.
The tool has 18 notches and a double dot mark for position reference is provided. The positioning on the neck will vary depending on the scale of the instrument:
The dots are nominally positioned at the 12th fret.
For shorter scales, the dots are placed at the 11th fret and for longer scales the dots are placed at the 13th fret.
Multiple guitar scales accommodated.
Freestanding use (with steady) and conventional use.