Q: Are there any other guitar scales outside the ranges provided that the Dual Notched Straightedge will work with?

A: Yes, the 24” scale used on Fender Mustangs, Fender Jaguars and some others will work perfectly with the F-25.5” side.  Just place the first notch from the front over the nut and the notched straight edge will fit perfectly to your fretboard. 

22.75” scale used on Baby Taylor guitars (excluding the Big Baby Model), Squire Mini Stratocaster and some others will work perfectly with the F-25.5” side.  Just place the second notch from the front over the nut and the notched straightedge will fit perfectly to your fretboard.