Maps are produced in Italy using aerial photographs and the pentagraph system.
Titles read: "Air Mapping".
M/S of a camera being loaded onto a biplane at an airfield. Commentator talks of aero-photographical measurements being a modern way of obtaining map accuracy.
In a studio we see various shots of cartographers tracing around the aerial photographs and reproducing the details on maps using the pentagraph system. Shots of machinery and the maps being printed.