High frequency (`violet ray') apparatus

Made:
1925-1950 in London
High frequency (`violet ray') apparatus, 'Rogers Vitalator'

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High frequency (`violet ray') apparatus, 'Rogers Vitalator'
Science Museum Group
© The Board of Trustees of the Science Museum

High frequency (`violet ray') apparatus, 'Rogers Vitalator', by the Betax Manufacturing Co, 486 Oxford Street, London, W1, England, 1925-1950.