Testing Time For Puppets -- Undergoing a final check before proceeding to the dispatch department are a batch of puppets made in the Wiltshire market town of Marlborough, Here, at the only factory of its kind in England, a group of enthusiastic workers produce the Pelham hand-made puppets, which, in the past five years have found their way into almost ever country in the world, while others have become familiar to Television viewers in Britain. Some of those in this picture will go into British