Rocket Model On View At British Radio Show -- Warrant Officer A. Bridge of Britain's Royal Electrical and Mechanical Engineers, adjusts cut-away model of 2,000 mile-an-hour guided rocket at Earl's Court, London, yesterday, for today's opening of 1952 Radio Show. A sign placed near the model reads: "No information can be given on the technical specification performance or use of this rocket." Information later released by the R.E.M.E. to the press said the rocket and its booster (near end) are mo