This brass armillary-type planetarium shows the movements and positions of the known planets (up to Saturn) around the Sun. The central plate supports the Sun on pillars, with rings for Mercury and Venus, the Earth and the Moon. The plate is geared so that it can be rotated to show the annual motion of the earth around the Sun. The diurnal motion of the Earth can also be shown. The central plate is mounted within a large armillary sphere which has rings for Mars, Jupiter, and Saturn. The model of Jupiter is surrounded by four satellites on fine rings, but the spheres for Mars and Saturn are now missing. The central plate is engraved with tables showing the Sun's apparent motion in relation to the Earth and giving information on the planets (i.e. diameters, mean distance from the Sun's centre, periods of annual and diurnal rotation and a calendar scale). The whole is supported by a base on four ornamented legs with another plate is mounted in between the feet, which is engraved with compass points and the maker's signature RICHARDUS GLYNNE CHEAPSIDE LONDINI FECIT.