Astronomical Instruments of the Imperial Observatory

A technical or scientific illustration within a double-lined border. The image depicts various mathematical or surveying instruments placed on a landscape. In the upper section, a large pair of dividers (compasses) stands upright on a ground line, with small floral or herbal tufts nearby. Several smaller stylus-like instruments or stakes are scattered on the ground to the right. In the lower section, a hand is visible holding a second, more complex pair of dividers. This instrument features a curved adjustment arc with a screw mechanism. The point of the dividers is placed at the center of a drawn circle on the ground. The landscape is rendered with simple horizontal hatching to indicate terrain.