These are the measurements taken from a Heddon 3/2  #17 Black Beauty in 8 
1/2' length and a size 2f  ferrule.  Designated for line HDH or E which is 
a  6DT and whatever "E" is.  I subtracted .004" for varnish.

Chris McDowell
mcdowellc@lanecc.edu

1"                .078
5"                .094
10"                .106
15"                .122
20"                .137
25"                .146
30"                .159
Ferrule
36"                .174
40"                .189
45"                .204
50"                .217
55"                .230
60"                .250
65"                .264
Ferrule
70"                .286
75"                .299
80"                .310
85"                .324
Swell begins at about 89" (.346)
90"                .395