"Duchess" electrical hearing aid

"Duchess" electrical hearing aid, cased, English, 1950-1970

Details

Category:
Audiology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A602528
Materials:
case, metal, covering, velvet, brown, lining, velvet, green, lining, fabric, earpiece, plastic, earpiece, aluminium, anodised, earpiece extension, polythene, earpiece extension, acrylic, power unit, plastic, grey and power unit, brass
Measurements:
case: height 81 mm
case: width 99 mm
case: length 33 mm
earpiece: diameter 20 mm
power unit: height 12 mm
power unit: width 23 mm
power unit: length 74 mm
earpiece extension: height 41 mm
earpiece extension: width 25 mm
earpiece extension: length 21 mm
type:
hearing aids
credit:
Bailey, A. Optical Mission