77/1724 [Astronomy]. (Verbiest, F.). (Ecliptic armilla). Brass scale model of the ecliptic armilla at the Beijing Observatory, 35(h.)x28x(w.)x15(d.) cm., on red velvet and silk covered wooden base, in orig. board box w. silk lining and bone clasps, 38x29,5x22 cm. (box).

= A fine scale model of one of the six new instruments that Verbiest designed for the Beijing Imperial Astronomy Observatory, when he had become head of the observatory in 1673. The original ecliptic armilla is 6 feet in diameter. This model has a diameter of 19,5 cm. SEE ILLUSTRATION PLATE LV.