Trussrod Aluminium Channel For Classical Guitars, 361mm length Genuine Fender Tuning Machines Gotoh manufacture a set of

Gotoh manufacture a set of aged nickel adapter bushings that can be found here

scooped midrange

72mm (3 3/8 inches) X width = 34

with intonation screws and springs

the human ear doesn't actually hear this as a gradual volume increase

Trussrod Aluminium Channel For Classical Guitars, 361mm length Genuine Fender Tuning Machines Gotoh manufacture a set ofTrussrod with Aluminium U Channel for Acoustic Guitars 361mm length (this measurement includes the length of the adjusting nut, of which measures 30mm long by itself). These trussrods are adjusted with a 5mm allen key (not included). Aluminium U channel has a 5mm steel rod inside. This truss rod can be adjusted with 5mm allen wrench. Nut & washer are included. Size of aluminum U channel : 11mm wide x 9mm deep Dia. of steel rod : 5mm 361mm length, 11mm