Vintage Illustration of Scientist or Inspector Giving a Stop Signal #1822177 (License: Personal Use)

This black-and-white line illustration depicts a mid-20th-century figure-likely a scientist, engineer, or factory inspector-wearing a long lab coat, trousers, shoes, and a flat cap, standing with arms fully extended sideways in a clear signaling pose. The clean linework and expressive posture suggest it was used in technical manuals, safety posters, or instructional materials to convey standardized gestures. The shadow beneath adds subtle depth, reinforcing the authoritative stance.

Commonly used in historical industrial safety guides, vocational training materials, or retro-themed design projects; matches user intent for visual references on non-verbal communication, workplace signaling, or mid-century technical illustration.