With the line on the craft paper, It’s simply a matter of getting the spacing correct.
Since I don’t know exactly what kind of knobs are on the original, I try this… using a pair of dividers, I take the diameter of the knob… and then check against the frets in the same photo,
This worked out to about the 6th fret, which is over 1 1/6, too large for the knob… so scratch that Idea… I go with the next best method… I guess… 7/8ths.. Since I’m probably gonna be making the knobs anyway, 7/8ths works for me…
So plot.. and check against the photo….
Not even close…..
Ron Kirn