For inspection of very high station roofs self supporting turntable ladder, which can be extended to height of 65 ft, constructed for British Railways (London Midland Region) by Merryweather and Sons designed as ladder operated from station platform and as mobile unit which, mounted on truck, can move anywhere on railway system.
Railway roof inspection ladder
Engineer
Engineer ; 196 , n 5085
1953
Aufsatz (Zeitschrift)
Englisch
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AUTO SAFETY FOOTHOLD FOR A RAILWAY VEHICLE ROOF INSPECTION
Europäisches Patentamt | 2017
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