Various brief shots illustrating the changing countryside; a tree being felled; workman at a table looking at plans while another holds a pneumatic drill beside a ’Road Works Ahead’ sign; a man on a machine chucking up earth; a large pipe being lowered into the ground; a new (and nearly empty) motorway (this is from CP 325 - 300 . Road).
Various shots of Bert Smith using a tellurometer; a machine with a kind of aerial dish on the front that measures distances through sound waves for ordnance survey maps; another man sits at the ’speaker’ of the machine and makes notes. Three men are seen at adding machines in an Ordnance Survey office; a girl feeds some cards into an IBM computerised sorting machine.
Various shots of Dennis Braten using a stereo plotting machine which traces a 6 inch scale map from an aerial photographic plate. On a field by a parked Land Rover, Norman Facey uses a sight rule on a 6 inch detail survey and draws across the map.
In another Ordnance Survey office, some men a