Pocket sundial, Saxon, 10th century.
© Science Museum / Science & Society Picture Library
The original dial, of which this is a copy, was found in 1939 in the soil of the Cloister Garth at Canterbury Cathedral in Kent. It was in the form of a tablet of silver, with a gold cap and chain. The gnomon consisted of a gold pin surmounted by a chased animal head with jewelled eyes and a ball in the mouth.