An interactive mechanical clock
Introduction
The photograph on this page of An interactive mechanical clock by Russel Wills as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Russel Wills Taken: 7 Jun 2018
The clock is based on a ‘camera obscura’ and it tells the time with its rotating minute hand suspended above head height parallel to the ground. The minutes are shown on the ground and the hour on a central ring above the main sphere