1992
AL#30 p.46   BRB3 p.210            read this article
Don Musser                                                                                           

▪ Musser tries to get the guitar to play in tune with itself by laying out the frets for just intonation, rather than equal temperament. Interchangeable fretboards allow the changing of keys and tunings. Pretty interesting, and the new fret pattern looks very bewildering and cool. Based on the work of Mark Rankin.