Essential for proper truss rod adjustment. Machined Edge 6061 Aluminum.
One side is for 25.5" (Fender) scale guitars, and the other side is for
24.75" (Gibson) scale guitars. CNC precision machined 1/8" thick 6061 Aluminum Alloy, not 1/16" as some others. With a flatness of
+/- .001"
Good to use with 21, 22 or 24 fret necks..doesn't matter. Use
with strings on or off. Notched to the 22nd fret with clearance for more
frets and Clearance for the nut on the other end. Covers the entire
length for the neck . You can also place on top of the frets (off the
cut notches) to use as a Standard Straightedge to check fret wear and
level. If you're not sure scale length of your guitar just ask us. Neck Check
Guitar Tools makes notched straight edges for a wide variety of
guitars for more than 7 years .