 three cameras were set up  to record the action. Of course a stunt double was employed, and  told to "waggle" his legs on the way down, for more humour. The  scene was filmed inside MGMs Stage 5 (in Boreham Wood, outside  London) where a huge, 154,000 gallon tank, of tepid water, had been  readied. Here, a set representing the first three stories of a  French apartment house had been erected, right beside the tank.  Because one cameraman had partly missed the fall the first time, the  stuntman was asked to do it again. He changed out of his wet  clothes, and duly did so, some minutes later. But the director felt  he needed another, to be sure, and so a third take was done.  Eventually only one camera angle was used, of course. The stunt man  was paid about a hundred pounds for his part, it is believed.