Abbreviated term for Home Normal ControlThe Home Signal lever is proved Normal (and Semaphore Signal arm On where repeated) before the Signaller can give Line Clear to the Signal Box in rear. This pre... More.
The site for Miniature and model signalling!
Abbreviated term for Home Normal ControlThe Home Signal lever is proved Normal (and Semaphore Signal arm On where repeated) before the Signaller can give Line Clear to the Signal Box in rear. This pre... More.