Thermionic triode valve

Made:
circa 1920s-1930s
Thermionic triode valve

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

Thermionic triode valve

Details

Category:
Radio Communication
Object Number:
Y7001.976
Materials:
glass, metal (unknown) and bakelite
Measurements:
overall: 100 mm 31 mm,
type:
triode valve and thermionic valve