Note that on modern Martin necks, the fretboard thickness is between 0.225″ and 0.250″, most commonly near the low end of that range. Fretboard thickness is not included in the Martin chart below.
Collings neck shapes
Neck profiles and shapes
Note that on modern Martin necks, the fretboard thickness is between 0.225″ and 0.250″, most commonly near the low end of that range. Fretboard thickness is not included in the Martin chart below.
Collings neck shapes
Todd's place, entirely random, or not... 
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