Pewter ammoniaphone

Pewter ammoniaphone, for voice cultivation, invented by Dr

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Pewter ammoniaphone, for voice cultivation, invented by Dr
Science Museum Group
© The Board of Trustees of the Science Museum

Pewter ammoniaphone, for voice cultivation, invented by Dr. Carter Moffat, by Medical Battery Co. Ltd, 52 Oxford Street, London, England, 1871-1900.

Details

Category:
Therapeutics
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A606886
Materials:
pewter
type:
ammoniaphones