Valve
Maker and role
Standard Telephones and Cables Limited, Manufacturer
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Object detail
Accession number
1978.1813
Description
Glass bulb with porcelain base. Inside the tube is a coil. The porcelain base has a metal base slotted for a bayonet fitting bulb. Contains metal rectangular attachment inside glass bulb. Four screws extending from sides of base.
Marks
Standard Telephones/ and/ Cables Limited/ 4211E/ Made in England/ British Patents/ 17580-15 185000/ 201317 243200 Printed
Media/Materials
Credit Line
Standard Telephones and Cables Limited. Valve, 1978.1813. The Museum of Transport and Technology (MOTAT).
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