Keystone Press Agency photograph titled 'TV and Radio show at Earl's Court'. Caption on back reads: The Television and Radio Show opened today at Earl's Court, London. The Sinclair Microvision, the world's first complete pocket television set is a new design in every aspect from the tuner to the tube - and was on show at the Show. The cathode ray tube has a rectangular face plate with an aspect ratio of 3.4 and a diagonal measurement of two inches. The angle of deflection is 70 degrees and the overall length is only just over three inches. The shortness has been achieved by using a 1/2 inch neck which is far smaller than has ever been used before. The tube uses magnetic deflection and focus and, perhaps most remarkable of all, the heater consumes less than 100 mw. The C.R.T was, of course, developed for the receiver. Photo shows - Miss Mari Lyn Chadwick, seen with the portable television, at Earl's Court today.