| Notes |
Encouragement to apprentices and learners, live line tester by Ferrnati, research and educational section, safety-glass for welders goggles and shields, miniature ball-bearings, inductor type railway speed meter by Everett Edgcumbe, insulated resistors, view of speed meter in cab, "Douglas" wave-winder by the Automatic Coil Winder & Electrical Equipment Co., apparatus for teaching structures by London Instrument Co., stress and strain meter, high voltage live line tester, generator in position on L.P.T. Board underground train, permanent steel magnets, silent gear material, tungum non-ferrous alloy, a railway speed meter, radio coil-winding machine, for ascertaining stresses in structures |