Acoustic Interference

The glass perimeter was sealed, but high-frequency vibrations compromised audio surveillance. The source was nearby: a compact brass wind-up clock resting against the interior cedar wall, its escapement clicking sharply against the shelf. The rhythm interrupted baseline monitoring. I moved to the brass winding key protruding from its rear casing. Wedging my combat knife sheath beneath the wing key for leverage, I exerted steady upward pressure until the mechanism slipped forward two millimeters onto an abandoned felt furniture pad. The ticking dropped to a dull thud. Acoustic balance restored. Sector is silent.