Thermionic valve - multiple electrical valve 4 volt

Thermionic valve

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

Thermionic valve - multiple electrical valve 4 volt, 0.34 amp. type 3NF. Boxed, appears never to have been removed from original packaging.

Details

Category:
Collection Unassigned
Object Number:
YINH327
type:
thermionic valve - valve,multiple