Telegraph block instrument, "penguin" type
Telegraph block instrument; BR. Standard modularised 2-needle absolute (Down/Up Main; traffolyte-plated) 3-position type, with a white black-arrowed bakelite wedge as commutator, tapper/blockbell unit underneath, and an improvised metal base-plate. The plastic case is trafolite-plated "MICKLEOVER". Known as a 'Penguin'.
- Signalling & Telecommunications
- Object Number:
- British Rail, Clapham
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