Astronomical Instruments of the Imperial Observatory

A partial engraving of an armillary sphere or astronomical instrument is shown. The device is mounted on a decorative wooden stand with carved scrollwork and rests on a ground plane featuring small plants and rectangular blocks. The sphere consists of several interlocking rings, some of which are marked with numerical or zodiacal symbols. The outer meridian ring is graduated with a scale. The entire scene is enclosed within a simple rectangular border.