Production Date
Circa 1900-1920
Filler for depositing carbon granules in microphones. Filling "funnel", brass, plated. Consists of a cylinder (to hold carbon granules), one end of which has a circular array of 6 nozzles. A lever on the side permits a disc of 6 holes inside the cylinder, to release a measured amount of granules. Mounted on cardboard backing with components for display purposes.
Processed Material/Metal/Alloy/Copper Alloy/Brass
Accession No
Credit Line
Circa 1900-1920. Filler Funnel, 2003.6. The Museum of Transport and Technology (MOTAT).

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