Ancient Lyre Sundial Illustration - Historical Timekeeping Instrument #3900717 (License: Personal Use)

This black-and-white line illustration depicts a decorative lyre-shaped sundial, featuring two gracefully curved scroll arms supporting a slanted gnomon with parallel lines indicating hour markings. The instrument rests on a circular calibrated base with fine radial gradations and a notched edge, suggesting precise solar time measurement. The style reflects 19th-century scientific engravings used in encyclopedias and horological treatises.

Used in educational or historical web content about ancient timekeeping devices, sundial evolution, or classical instrumentation; matches user intent for visual reference in academic, museum, or hobbyist contexts.