Nested Rectangle Dimension Diagram - Engineering Layout Reference #2307313 (License: Personal Use)

This diagram depicts two aligned rectangular outlines: an outer rectangle defined by height A and width B, and an inner rectangle with height C and width D. The spacing between them represents uniform margins or clearance zones, commonly used in mechanical tolerancing, frame design, or enclosure layouts. Arrows indicate measurement directions for unambiguous interpretation in CAD or drafting contexts.

Used in engineering documentation, CAD software tutorials, manufacturing specs, and educational materials to explain dimensional relationships, clearance zones, or mounting constraints. Matches user intent for technical drawing interpretation or dimensioning standards.