We offer Adjustable Microtonal Acoustic Guitar fretboards. 
 
Please see the brochure for details of the system in the link below:
THE NECK (ADJUSTABLE MICROTONAL GUITAR).pdf
 
Acoustic fretboard - Standard:
6 strings
20 frets
43 mm at the nut side
54 mm at the 12th fret
59 mm at the sound hole side
sound hole diameter 100 mm
scale length 650 mm
fretboard length 465 mm
6mm thicknes
 
Custom sized fretboard - Custom Type:
For custom sized fretboards please contact us. 
For custom-sized fretboards, an additional charge of 50€, 100€, 200€ (Custom Type 1 to 3 consecutively) applies according to the deviation from the standard sizes and shapes.
 
If you wish to replace your current instrument's fretboard with ours, you will need a luthier to assist with the process. Please contact us for any questions. Also we can direct you to the skilled luthiers here in Turkey.