Inclining dial for latitudes 35°-60° North. This dial has an arched North end and shaped projections. The obverse side of the dial-plate displays a minute-circle and an hour-circle. The gnomon is of simple design and has two holes at the top for the suspension of a double-bobbed plumbline. Running north from the gnomon is a scale of latitudes and around its base is a table of latitudes for various places in Europe. Drilled down its centre are four pinholes of unknown usage.

The compass is hung between two short pillars on a square brass plate to allow it to remain horizontal when the dial is inclined. It has an eight-point rose, with the names of the points in French. Unlike other forms of inclining dial, this one does not have a latitude arc. Instead, the whole base-plate is tilted by adjustment of the brass levelling-screws at the corners of the dial. Two plumb bobs hanging from the gnomon indicate the latitude on a pair of latitude scales below the gnomon. It is only when they both hang over the same value that the dial has been correctly adjusted. On the obverse side of the dial-plate, it is signed 'Jacques LeMAIRE de la societe des Arts au Genie AParis'. Similar instruments are in the British Museum (registration no. 1894,4-16.1) and the Whipple Museum (accession no. Wh: 0815), and a third was included in the sale of instruments from the Time Museum in 1988.

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