Belgian State Railroads have put into operation in their locomotives, electric device which records deviations in track surface in vertical direction; device was first shown at International Exhibition in Liege.
Equipment for track supervision
Geraet zur Gleisuntersuchung
V.D.I. Zeitschrift ; 75 , n 34
1931
2 pages
6 Figs.
Aufsatz (Zeitschrift)
Deutsch
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