Referee Whistle Illustration - Sports Officiating Icon #312355 (License: Personal Use)

This is a precise line drawing of a traditional pea whistle, featuring a rectangular mouthpiece, a small air channel window, and a rounded resonator chamber. The clean, unshaded outline emphasizes its functional design and universal recognition in sports officiating. The image conveys authority, fairness, and immediate auditory signaling in athletic contexts.

Used on sports education sites, referee training portals, rulebook pages, or blog posts about game management; matches user intent seeking visual references for officiating tools or iconography.