print. engraving. circular in four quartile segments, paper mounted on cloth with bound edges. Geometrical projection of two thirds of the [celestial] sphere by Colonel James RE, FRS, MRIA &c, Coeli, Besse, Tenus, Liceat Convexa Tueri, published by Colonel Sir H James RE and sold at 2/- (shillings) per sheet c1850. [features path of the pole due to precession considered as uniformly described in the period of 25800 years, February to October, horologium 1850], 69 cm diameter