Man measures gradients of hills, road cambers, mileage, bridge heights etc.
Man walks along a busy street pushing some kind of measuring device - presumably measuring distance between different places by road. Bridge heights are measured with special vehicles. Mileage is measured by a car which has a fifth wheel. Gauges within the car record gradients of hills, road cambers etc. C/U of gauges. Surveying.
Was a Pathe Pictorial item.