Snakehead Fingerboard Width

Hello Valued Community

I need some advice. I came out with a Celtic model several years ago, loosely based on the venerable Gibson A. I use the same fingerboard width as a teens model. It has been well received by the public.

I now have an order from a gentlemen who used to own a snakehead, and wants the same fingerboard proportions. Can somebody help me out here? I figure 1 1/8" for the nut, but how about the width at the 12th fret? Should I just go with the standard spacing from an F model? I have never owned a snakehead, so I don't know. Anybody with a rule have a couple of minutes?!?

My 23/24 blacktop is 1 1/16 at the nut and 1 15/32 at the 12 th fret but I’d query the consistency of most things Gibson during this period.

I’m not sure if these plans would help? https://luth.org/instrument-plans/mandolin-family/

Why not get the measurements from his mandolin? That way you know it will be what he wants.

Never mind, after re-reading I see that the original question was for a snakehead, which I don't have figures for.
But for anyone who is interested, here are some figures for teens mandolins.

1917 paddle head A-4: 1 5/32" at the nut, 1 17/32" plus a hair at the 12th fret, 1 11/16" at the 20th fret. Re-fretted with modern wire.

1910 F-4: 1 3/16" minus a hair at the nut, exactly 1 1/2" at the 12th fret, exactly 1 5/8" at the 19th fret. Measured with the frets removed.

1918 F-4: 1 3/16" at the nut, 1 17/32" at the 12th fret, 1 21/32" at the 19th fret. Re-fretted with modern wire.

I re-read and saw the "used to own". Sorry.

A bound fingerboard snakehead will have a wider 'board than an unbound. Find out what model he had.