High frequency (violet ray) apparatus, 100 or 240v supply, by the Ideal Home Electrical Appliances Ltd. and by Roger, 45 Great Ormond Street, London, WC1, England, 1920-1950.
- Object Number:
- case, wood, paper covered, electrode holder, plastic, brown, knobs (2), plastic, brown, tubes (3), brass, tubes (3), glass, blown
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