Telegraph instrument; single needle

maker:
Unidentified
Telegraph instrument; single needle,

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Telegraph instrument; single needle,
Science Museum Group

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph instrument; single needle, pedal commutator; c.1854; type used on the Newcastle & Carlisle and Leeds Northern Railways. Overall: 626 mm x 365 mm x 260 mm.