I had to have a bullworker when I was about 13. Just looked them up to see if they are still sold. $200 bucks now! I think I paid $34 bucks which was outrageously expensive. Back in the early 70's they gave you the address to an English bodybuilding champion named Len Sell for any questions. I wrote him a letter asking him about Nautilus equipment. I got a letter in the mail from England. He wrote two lines that he had never seen a Nautilus machine.