Arnold was unique re his calves. In 1968 in Golds Gym I measured his arms at 21 1/2 inches. He was 62 inches around the shoulders. He wouldn't let me measure his calves and told me to come back in a couple of weeks. I went back to Canada, instead.
Well, Arnold looks huge when he poses his calves from the side. No one else has that bulge. From the back they look a bit weird....unlike Platz and Dorian who have huge calves. So the question is open about how Arnold got huge calves in record time.