Block instrument (sending/receiving)
Block instrument; BR (ScR; Irving). Pegging 2-needle (top-pivotted) Down/Up-Line absolute 3-position/indication, with black-wedge rotary commutator.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 1994-8778
- type:
- block instrument
- credit:
- British Rail, Clapham