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Click for more information on HMV prewar sets
HMV Eyeglass TV This company has built a curious apparatus called"the television eyeglass". It weighs less than 800g, and can be easily held in the hand, like a telephone receiver. The sound is perceived by the earphone which is applied against the ear and the 4 cm x 3 cm picture is visible via a 45 degree mirror. (Picture and text courtesy of Jerome Halphen)
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