Ediswan thermionic triode valve

Made:
1923 in England
Ediswan thermionic triode valve

Ediswan thermionic triode valve
Science Museum Group
© The Board of Trustees of the Science Musuem

Ediswan thermionic triode valve

Details

Category:
Radio Communication
Object Number:
Y7001.973
Materials:
glass, metal (unknown) and bakelite
Measurements:
overall: 108 mm 50 mm,
type:
triode valve and thermionic valve