discuss...
I've personally measured the arms of the hulking individuals listed below. All of them had placed in the top eight of a recent show, and the measurements were taken about ten days after the show, presumably when they were at their biggest from all of the post-competition carbs ingested.
Bodybuilder A
Height: 6'0"
Weight: 286 pounds
Cold arm measurement: 20.62"
Bodybuilder B
Height: 5'3"
Weight: 228 pounds
Cold arm measurement: 20.25"
Bodybuilder C
Height: 5'7"
Weight: 214 pounds
Cold arm measurement: 19.62"
Bodybuilder D
Height: 5'11"
Weight: 258 pounds
Cold arm measurement: 18.9"