Concentric Circle Diagram - Technical Illustration for Engineering & Design #3647946 (License: Personal Use)

This black-and-white line drawing features a central circle enclosed by a single inner ring and a double-lined outer ring, suggesting depth or structural layers. The precise geometry implies technical usage-such as depicting a mechanical washer, optical lens cross-section, or abstract data visualization element. Its simplicity ensures scalability and clarity across print and digital media.

Frequently used in engineering documentation, CAD schematics, educational materials on geometry or physics, and UI/UX design as a placeholder or symbolic icon for focus, targeting, or circular components. Matches user intent for technical illustrations, clipart, or diagram templates.