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4 Volt Experimental Fleming Oscillation Valve, by Ediswan, London, 1904

Inventory Number: 86405

86405-1t 86405-2t

Date: 1904

Maker Details: Made by Ediswan.

Inscription: "FLEMING OSCILLATION VALVE / 4VOLTS" printed on exterior surface of bulb.

Size: 100 mm in diameter

Materials: Wood, glass, steel?, brass.

Other Given Number(s): Christie's 189.


Small 4-Volt Experimental Fleming Oscillation Valve, with ball-shaped glass bulb held by a spring contact on a turned wood base. With two steel? terminals and lacquered brass insulated stud terminal mounted on the base.

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