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4 Volt Experimental Fleming Oscillation Valve, by Ediswan, London, 1904
Inventory Number: 86405
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.
Notes:
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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