Circular inclining dial for latitude 0°-60° North. The hour-circle is hinged to the North side of the dial-plate. There are engraved scroll ends at each end of the hour scale and circular arcs support the gnomon. The gnomon is made of pierced brass, folds flat when not in use and is for a latitude of 56° (despite the fact that according to the latitude arc it should be 60°). There is a screw attachment where the hour-circle moves on the latitude arm in order to clamp it in place. The latitude arc is hinged to the East side of the base-plate and is divided clockwise 0°-60°.

The compass was originally silvered and is set into the base-plate. It is marked with an eight-point rose, upon which the cardinal points are highly decorated. The cardinal and quadrantal points are marked by English initials, and set into the compass are two brass spirit levels. The needle is blued for North and surmounted by a brass cylindrical pivot. The edge of the base-plate gives the names and latitudes of five Russian towns in Cyrillic: Moscow 55° 45', Irkutsk 52° 16', Tobolsk 58° 11', Kazan 55° 47', St Petersburg 59° 56'.

This is the sole example of a Russian dial in the NMM collection. It is signed 'Reichenbach' in Russian characters. It is modelled on the English inclining dials of the period; indeed, the compass is so similar that it may well have come from Britain.

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