- Subject
- Electronic instruments
- Item type
- Object
- Provenance
- Presented by the Marconi Corporation in 2003.
- Object type
- Electronic instrument
- Dimensions
- Diameter: 133mm Height: 155mm Weight: 1.35kg
- Inventory No
- 12894
- Accession Number
- 2003-11
Description
Used in Telegraphy to amplify the power lost on long cables, by activating a sensitive coil which moves contacts that operate equipment powered locally.
Wooden circular base with brass fittings marked by letters 'D, D, S, T, M, U, U'. Brass cylinder body with glass top on hinged lid. Brass turning knob on side labelled 'S' and 'M'.
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