Symbol Gas Cylinder Metal Sign

About the Gas Cylinder design

Rounded corners so generous the body reads almost as a square with the edges filed off, and a thick band crosses it dead center, cutting it into two openings of nearly equal height. A squared collar rises from the shoulders, about half as wide as the body, its own top corners rounded to match. Inside that collar a small half disc bumps up from the lower edge, no bigger than a thumbprint, the only curve in the drawing that stands alone.