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Fleming Valve, by Ediswan, London, c. 1905

Inventory Number 41677

Acknowledgement: © History of Science Museum, University of Oxford, inv.41677

Item type
Object
Makers
Ediswan
Provenance
Presented by the Marconi Corporation.
Object type
Radio valve
Dimensions
Diameter: 25mm Height: 120mm Weight: 0.05kg
Inventory No
41677
Accession Number
2004-9/184

Description

Fleming Valve, made in cylindrical form with copper gauze covering and bayonet fitting, with brass base. Purpose of copper gauze was to protect valve from any external electrical fields. Previously catalogued with 4 Volt Fleming Valve (Inv. Num. 93660).

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