Concentric Circles Illustration - Vintage Ink Drawing Style #160728 (License: Personal Use)

This black-and-white illustration features five uneven, hand-rendered concentric circles with visible brushstroke texture and slight imperfections, evoking an antique scientific diagram or artistic sketch. The central void is clean, while outer rings show variation in thickness and continuity, suggesting manual creation with pen or ink. The style resembles 19th-century engravings used in optics, acoustics, or geometry textbooks.

Commonly used in educational content about wave propagation, target practice, focus metaphors, or minimalist design elements; appears on landing pages, blog headers, or infographics where symbolic simplicity is valued.