Horizontal pedestal dial for latitude 51° North. This dial, signed 'T. Crow Wateringbury fecit 1801', consists of a circular dial-plate with an hour circle round its edge. To the north of the simply-shaped gnomon and among garlands of leaves are the noon points for the sites of six famous naval battles, including St. Vincent, Camperdown and Copenhagen. There are three screw holes to allow attachment to a base. This type of dial needs to be set up so that the noon line lies across the meridian with the hours arranged symmetrically on either side.

This particular dial was made as a memorial to six of the naval battles fought by the English at the end of the 18th century and the very beginning of the 19th century. It commemorates the victories of Admiral Richard Howe, Earl of Howe; Alexander Hood, Viscount Bridport; John Jervis, Earl of St. Vincent; Adam Duncan and Admiral Nelson, although it does not include the battle of Trafalgar, which took place four years after the dial's manufacture. The motto which appears at the southern end of the dial, 'Nemo sine crimine vivit' [no one lives without judgement] was presumably intended to reflect the judgement of the British Navy on the nations of Europe. The dial was probably made for one of the victorious officers of the Navy. Another horizontal pedestal sundial by Thomas Crow was situated at Wateringbury for many years, but was stolen at some time in the 1980s.

For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.