The Hallade Track Recorder (1952)
Instructs gangers and lengthmen how the Hallade Track recorder makes a continous record of the movements of a train during a journey and so shows up the good and bad places in the track.
Instructs gangers and lengthmen how the Hallade Track recorder makes a continous record of the movements of a train during a journey and so shows up the good and bad places in the track.