I'm repairing the wraps on a Gillum for a local owner. 
It's a powerful 7'6" 2pc #13 ferrule (Super Z) 6 wt that will (sort of ) cast

a 5wt. A fast, but to too unyielding rod, I might make a copy for creek 
smallies. Here are the numbers after subtracting 5 thou for varnish-of medium

thickness:
1 .071
5  .081
10  .100
15  .116
20  .136
25  .148
30  .161
35  .180
40  .205
Ferrule .210 at top .220 at base
50 .225
55 .242
60 .254
65 .276 
70 .290
75 .292 
80 .310 
last 10" under handle and reelseat.

Rob Hoffhines