Ok, so your conviction comes from that unique source, the wooden form of Strad
So we will stick to this source and study the ratio L/W
following Pollens the measurements are:
MB, 1.75 (form) 1.72 (top)
S , 1.75 (form) 1.72 (top)
P/B 1.74 (form) 1.71 (top)
T 1.76 (form) 1.73 (top)
Q 1.77 (form) 1.74 (top)
PG 1.72 (form) 1.69 (top)
SL 1.78 (form) 1.75 (top)
B 1.78 (form) 1.75 (top)
B 1.75 (form) 1.72 (top)
S 1.73 (form) 1.71 (top)
P 1.72 (form) 1.69 (top)
PG 1.73 (form) 1.70 (top)
Again Pollens made a weird conclusion "the predicted ratio of 9:5 (?) is not observed either in the forms or in the instrument made for them"
He is clearly blinded ( ignorance of the nature of proportions ? belief ?)
Anyway It's clear that Pollens never heard about the harmonic section because he would have notice a perfect match
between numbers and proportional relations.
ratio
9:16
0,563
1,78
4:7
0,571
1,75
harmonic approximation
square or compass
0,577
1,73
root of 3 use of the 1x2 square
7:12
0,583
1,72
harmonic approximation
square or compass
0,586
1,71
harmonic section
Again, like the previous drawing, you quote a perfect counter-example of your belief.
You trust Pollens only because that consolidates your conviction but you don't take 10 mn to check if it is correct! And unfortunately he is not
and i just give right now, a mathematic proof of his mistake.