The kit can be wheeled into position by one person and unpacked and assembled in just 15 minutes.

Each unit comprises a mast that can be extended up to a height of 15.2 metres (53 feet). This lightweight mast weighs only 18 kilograms.

The mast sits on a collapsible tripod. Adjustable guy ropes provide stability.

At the top of the mast there is a digital camera that can be rotated through 360 degrees, controls also include pan and tilt.

The camera is operated from a laptop computer at ground level. The user views what the camera is seeing via the laptop below.

The specialised software on the laptop allows full control of all camera functions, including the zoom, ensuring perfect imaging of each photograph.