Telegraph block instrument

Telegraph block instrument; GER. Sykes 2-needle (Up/Up Line) 3-position absolute pegging/non-pegging instrument (with internal bell). Traffolyte-plated "FAST TO HARRINGAY", with circular brass commutator (plus central bell-plunger), rectangular electroplated/brass "Sykes" maker's plate, and semi-circular ivorine line-description plate.

Details

Category:
Signalling & Telecommunications
Object Number:
1994-7124
type:
telegraph instrument