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Visitors using telesonic lorgnettes, Science Museum, London, 1961.

© Science Museum / Science & Society Picture Library

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Museum visitors looking at a Bessemer converter, using a hand-held radio receiver and earphone intended for receiving signals from a low-powered transmitter. They were used experimentally at the Science Museum in 1961 for providing personal audio commentaries in the Museum's galleries. The telesonic lorgnettes were made by A&M Hearing Aids Ltd.
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