Telegraph block instrument (sending)

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Telegraph block instrument (sending)
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument (sending)
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument (sending)
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument, metal-cased; BR. Standard portable/temporary 2-line (Up/Down) 3-indication absolute pegging/non-pegging instrument (sending). Line-descriptions are represented by illuminated rectangular indicators; plus bakelite-wedge commutator and Line-Description Transfer.

Details

Category:
Signalling & Telecommunications
Object Number:
1994-7113
type:
telegraph block instrument

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