Radio Hypnotic Crystal device, c.1950, by Knowles

Radio Hypnotic Crystal device, c.1950, by Knowles

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Radio Hypnotic Crystal device, c.1950, by Knowles
Science Museum Group
© The Board of Trustees of the Science Museum

Radio Hypnotic Crystal device, c.1950, by Knowles

Details

Category:
Therapeutics
Object Number:
1982-1450
Materials:
container, metal and contents, sand, ? material
Measurements:
height 69 mm
width 45 mm
depth 7 mm
type:
hypnotisers
credit:
Natural History Museum