Item title reads - The loud speaker has superseded the man with the megaphone at big open air gatherings. London.
M/S of eight trumpet shaped speakers attached to several big poles. M/S of a man sat in a van speaking into a microphone. C/U of the speakers, one is lifted by a wire and then goes...
A German car run on liquid oxygen is taken for a test drive.
Cattle have nose prints taken rather than being branded.
Early flying machine is demonstrated.
Eccentric device for deflecting bombs - looks like whirling outsized house mop.
New devices at the London Inventions Exhibition include a door with a cupboard inside it.
Strange motor scooter with two compartments for children to sit in.
A young woman customises a walking stick to help carry her parcels.
Early aircraft, the Ellahamer triplane making many unsuccessful attempts to fly.