Marconi Osram thermionic triode valve

Made:
1925 in England
Marconi Osram thermionic triode valve

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
© The Board of Trustees of the Science Museum

Marconi Osram thermionic triode valve

Details

Category:
Radio Communication
Object Number:
Y7001.778
Materials:
glass, plastic (unidentified) and metal (unknown)
Measurements:
overall: 112 mm 53 mm,
type:
thermionic valve and triode valve