This is a portable orrery with tellurium and planetarium attachments. The baseboard is finely engraved with calendar and zodiac scales and a variety of astronomical information, including small images of the planet Saturn and the changing position of its rings as observed from the Earth. It also gives a table of information about the planets for the year 1794. Interestingly, given this date, it does not include Uranus, discovered by William Herschel in 1781, although the planetarium attachment does.

The tellurium represents the motions of the Moon round the Earth, and the Earth, Mercury and Venus around the Sun, and consists of geared wheels and brackets, a brass Sun, a terrestrial sphere with engraved paper gores, and ivory Moon, Mercury and Venus. A brass plate below the model of the Earth carried paper printed with the phases of the Moon. The terrestrial sphere incorporated in the tellurium is the same as those used in the tellurium AST1059 and moon globe GLB0140, signed Bardin, London. The planetarium is mounted on a second baseboard and has a brass central Sun with the planets and their satellites. The whole is contained in its original oak box which has a lamp that can be used to replace the Sun in the tellurium and an attachment that can be used to demonstrate the retrograde motion of a star.