McVitie Weston valve collection, Triotron valve
- maker:
- Radiowerk E Schrack
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© The Board of Trustees of the Science Museum
Triotron valve, marked 3066 on base
Science Museum Group
© The Board of Trustees of the Science Museum
Triotron valve, marked 3066 on base, (RMW/E35 - McVitie Weston number), by Radiowerk E. Schrack.
