Fettler's gauge, aluminium, with direct reading cant gauge, made by Henry Williams Ltd., Darlington. Fettler's gauge
Track gauge, cant, aluminium stem with spring-loaded accommodation end, -3/4" - + 3/4", by Henry Williams Ltd, Darlington, c1970. Cant track gauge 1970
Diary issued by Henry Williams Limited, Railway Appliances Works, Darlington for the year 1931, containing product information. Railway Appliances Works diary 1931
Catalogue of permanent way equipment, mainly fishplates and levers, manufactured by Henry Williams Ltd. of Darlington, 1953 to 1956. Henry Williams Ltd. permanent way equipment (supplied title) 1953-1956
Drawing, "Messrs Henry Williams' Patent Diamond Crossing Point Protectors", hows angle point protectors illustrating the principle of working. Protectors coloured in red are raised in position and protectors uncoloured are down. Light red indicates road in use. Fig.117 Messrs Henry Williams' Patent Diamond Crossing Point Protectors
Summerson's rail chair with portion of double-headed rail, probably NER. Summerson's Rail Chair with Portion of Rail Attached 1883-1889