Marconi Osram thermionic triode valve

Made:
1935 in England
Marconi Osram thermionic triode valve

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

Marconi Osram thermionic triode valve DE5B

Details

Category:
Radio Communication
Object Number:
Y7001.1001
Materials:
glass, metal (unknown) and bakelite
Measurements:
overall: 110 mm 53 mm,
type:
thermionic valve and triode valve