Valve

Production date
Circa 1918

Object detail

Accession number
1978.1663
Description
Glass bulb (round) with two metal caps on top. White band with black bakelite stand below having four electrical points. "French Horned" letters can be seen around the base. An early low-power transmitting valve. c.1918." Bulb resembles rainbow colours.
Marks
Metal TMC Printed
Media/Materials
Processed Material/Glass
Processed Material/Metal
Processed Material/Ceramic
Processed Material/Synthetic/Plastic/Bakelite
Credit Line
Circa 1918. Valve, 1978.1663. The Museum of Transport and Technology (MOTAT).

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