Maker and role
Radio Corporation of America Limited, Manufacturer
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Object detail

Accession number
Glass tube with filament and one globule of mercury. Dark tinted bulb around centre, graduated and has a removable black bakelite base. Seven metal prongs extending from base surrounding central bakelite prong.
Credit Line
Radio Corporation of America Limited. Valve, 1978.1814. The Museum of Transport and Technology (MOTAT).


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