We offer Adjustable Microtonal Classical Guitar fretboards. 
 
Please see the brochure for details of the system in the link below:
THE NECK (ADJUSTABLE MICROTONAL GUITAR).pdf
CLASSICAL ADJUSTABLE MICROTONAL GUITAR BROCHURE.pdf
 
Classical guitar fretboard 1 - Type 1:
6 strings
19 frets
52 mm at the nut side (also 50 mm version is exist) 
62 mm at the 12th fret
66 mm at the sound hole side
sound hole 86 mm diameter 
scale length 650 mm
fretboard length 450 mm
6mm thicknes
 
Classical guitar fretboard 2 - Type 2:
6 strings
20 frets
52 mm at the nut side
62 mm at the 12th fret
66,8 mm at the sound hole side
sound hole 88 mm diameter 
scale length 650 mm
fretboard length 459 mm
6mm thickness
 
7 string classical fretboard - 7 strings:
7 strings
20 frets
59,6 mm at the nut side
70,6 mm at the 12th fret
75,5 mm at the sound hole side
sound hole 88 mm diameter 
scale length 650 mm
fretboard length 467 mm
6mm thicknes
 
8 string classical fretboard - 8 strings:
8 strings
21 frets
69 mm at the nut side
80 mm at the 12th fret
85,4 mm at the sound hole side
sound hole 88 mm diameter 
scale length 650 mm
fretboard length 480 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.