Caption

Clock cogs. Internal gears and cogs in an antique clock on a decorative background. At upper left is the pivot for the hour and minute hands; at top left is part of the seconds face. These cogs form part of a skeleton clock, so called because the internal components are not hidden by an opaque covering. The wheels transfer and regulate motion from the power source to the hands. Photographed at the British Horological Institute at Newark, UK.