- Item type
- Object
- Makers
- Ediswan
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "FLEMING OSCILLATION VALVE / 12 VOLTS / EDISWAN" printed on exterior surface of bulb. "12 VOLT FLEMING OSCILLATION / VALVE / ex POLDHU HOTEL" typed on label stuck upon exterior surface of bulb.
- Object type
- Radio valve
- Dimensions
- Height: 127mm Width: 100mm Depth: 100mm
- Inventory No
- 89342
- Accession Number
- 2004-9/580
Description
12 Volt Fleming Valve, in polished mahogany? gallows mounting. With ebonite panel and metal alloy terminal upon upper surface of gallows. With two metal alloy terminals upon upper surface of base. Bulb has vertically-mounted nickel anode and other metal components. Previously catalogued with other, similar 4 Volt Fleming Valve (Inv. Num. 67148).
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12 Volt Fleming Valve, by Ediswan, London, c. 1905Inventory Number 89981
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4 Volt Fleming Valve, by Royal Ediswan, London, c. 1905Inventory Number 67148